Here's a proof-of-concept almost-Spartan orthogonal Geminoid design -- just as an upper bound, not something I necessarily want to program to construct itself.

However, it would be relatively easy now to write a compiler that could build a slow salvo for it. The clearance problems are really minimal this time around, so an automatically generated recipe should work just fine:

`x = 305, y = 381, rule = LifeHistory`

72.4B$73.4B$74.4B$75.4B$76.4B$77.4B$78.4B$79.4B$80.4B$81.4B29.4B$B.B.

B.B.B.B.B.B.B.D.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B

.B.B.B.B.5B.B.B.B.B.B.B.B.B.B.B.B.B.B.5B$16BD3BD100B$21BD40B5D55B.B$

16BD4BD39BD4BD56B2A$17B5D44BD56B2A$61BD3BD55B2.B$.B.B.B.B.B.B.B.B.B.B

.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.D.B.B.B.B.B.B.B.B.B.B.B.5B

.B.B.B.B.B.B.B.B.B.B.B.B.B2.2B$89.4B26.B2A$90.4B26.A.A.2A$91.4B23.A.A

.2A.A$92.4B22.2A$93.4B$94.4B$95.4B$96.4B$97.4B$98.4B$99.4B$100.4B$

101.4B$102.4B$103.4B$104.4B$105.4B$106.4B$107.4B$108.4B$109.4B$110.4B

$111.4B$112.4B$113.4B$114.4B$115.4B$116.4B$117.4B$118.4B$119.4B$120.

4B$121.4B$122.4B$123.4B$124.4B$125.4B$126.4B$127.4B$128.4B$129.4B$

130.4B$131.4B$132.4B$133.4B$134.4B$135.4B$136.4B$137.4B$138.4B$139.4B

$140.4B$141.4B$142.4B$143.4B$144.4B$145.4B$146.4B$147.4B$148.4B$149.

4B$150.4B$151.4B$152.4B$153.4B$154.4B$155.4B$156.4B$157.4B$158.4B$

159.4B$160.4B$161.4B$162.4B$163.4B$164.4B$165.4B$166.4B$167.4B$168.4B

$169.4B$170.4B$171.4B$172.4B$173.4B$174.4B$175.4B$176.4B$177.4B$178.

4B$179.4B$180.4B$181.4B$182.4B$183.4B$184.4B$185.4B$186.4B$187.4B$

188.4B$189.4B$190.4B$191.4B$192.4B$193.4B$194.4B$195.4B$196.4B$197.4B

$198.4B$199.4B$200.4B$201.4B$202.4B$203.4B$204.4B$205.4B$206.4B$207.

4B$208.4B$209.4B$210.4B$211.4B$212.4B$213.4B$214.4B$215.4B$216.4B$

217.4B$218.4B$219.4B$220.4B$221.4B$222.4B$223.4B$224.4B$225.4B$226.4B

$227.4B$228.4B$229.4B$230.4B$231.4B$232.4B$200.A32.4B$199.A.A32.4B$

199.A.A33.4B$186.A11.2A.3A32.4B$186.3A10.B4.A32.4B$189.A7.B2AB3A12.A

11.2A8.4B$188.2A2.4B.B2A.A13.A.A9.B2AB8.4B$188.10B17.A.A9.3B10.4B$

190.8B15.3A.2A9.B.B10.4B$187.11B14.A4.B8.5B11.4B$186.12B2.4B9.3AB2A6.

6B12.4B$186.18B11.A.2A4.8B13.4B$186.19B12.13B15.4B$188.17B14.13B14.4B

$188.17B13.15B14.4B$187.18B2.B10.15B15.4B$183.B3.23B5.B.17B15.4B$182.

2AB.48B16.4B$182.2A21B2ABD11B2A13B16.4B$183.22B2AB3D9B2A14B16.4B$183.

3B.21BDBD20B3.B2A16.4B$187.23BD19B4.A2.A16.4B$188.26B2.2B2.B3.6B5.2A.

A16.4B$175.4B.B2.B4.8B3.7B2.4B13.6B7.A17.4B$176.9B2.5B8.6B17.9B6.2A

17.4B$177.13B11.3B19.2A4.4B10.2A13.4B$177.4B2D6B.3B9.B21.A16.2B2AB13.

4B$177.3BD2BD10B27.3A17.4B15.4B$177.4B2D9BA2B26.A19.3B17.4B$.B.B.B.B.

B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.D

.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.

B.B.B.B.B.B.B.B.B.B.B.B.B.B.16BABA39.4B5.3B4.3B5.2A3.4B$75BD3BD112B2A

40.4B2.7B2.4B4.A5.4B$29B5D40BD118B42.18B.BA.A6.4B$29BD4BD39BD4BD111B

45.17B.B2A8.4B$29BD44B5D113B45.18B11.4B$30BD3BD157B45.18B12.4B$B.B.B.

B.B.B.B.B.B.B.B.B.B.B.B.B.D.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B

.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.

B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.17B45.18B12.4B$178.16B44.18B13.4B$

178.17B43.18B14.4B$178.11B3.4B42.18B15.4B$177.13B3.4B42.16B17.4B$176.

15B3.B44.18B16.4B$175.16B3.2C43.12B4.2A.A15.4B$174.17B3.CB42.13B4.2AB

3A14.4B$175.16B4.3C39.15B4.B4.A14.4B$107.A68.13B8.C38.16B3.2A.3A16.4B

$106.A.A67.5B2A2B50.17B4.A.A19.4B$106.A.A69.3B2A2B51.16B4.A.A20.4B$

104.3A.2A11.A56.8B51.13B7.A22.4B$103.A4.B10.3A55.3B3D2B52.5B2A2B35.4B

$78.2A11.A12.3AB2AB7.A58.4BD3B54.3B2A2B36.4B$77.B2AB9.A.A13.A.2AB.4B

2.2A57.2B3D2B55.8B36.4B$78.3B9.A.A17.10B57.7B54.3B3D2B38.4B$77.B.B9.

2A.3A15.8B60.6B7.A46.4BD3B39.4B$77.5B8.B4.A14.11B57.6B6.A.A45.2B3D2B

41.4B$77.6B6.2AB3A9.4B2.12B57.5B6.A.A45.7B42.4B$77.8B4.2A.A11.18B57.

6B4.2A.3A44.6B7.A35.4B$78.13B12.19B56.6B6.B4.A43.6B6.A.A35.4B$76.13B

14.17B58.7B3.B2AB3A45.5B6.A.A36.4B$75.15B13.17B59.8B.B2A.A47.6B4.2A.

3A35.4B$75.15B10.B2.18B58.10B50.6B6.B4.A35.4B$74.17B.B5.23B3.B53.3B2A

6B50.7B3.B2AB3A37.4B$74.48B.B2A46.2A5.2B2A6B51.8B.B2A.A40.4B$73.13B2A

11BDB2A21B2A47.A5.10B51.10B45.4B$72.14B2A9B3DB2A22B48.A.AB2.11B49.3B

2A6B46.4B$71.2AB3.20BDBD21B.3B49.2AB.12B43.2A5.2B2A6B47.4B$70.A2.A4.

19BD23B55.15B43.A5.10B48.4B$69.A.2A5.6B3.B2.2B2.26B56.16B42.A.AB2.11B

48.3B.2E$69.A7.6B13.4B2.7B3.8B56.16B.2B40.2AB.12B48.3B.2E$68.2A6.9B

17.6B68.18B2A41.15B46.4B$63.2A10.4B4.2A19.3B68.17B.B2A41.16B44.4B$62.

B2A2B7.4B5.A21.B68.4B2.8B.4B.B42.16B.2B40.4B$63.4B6.4B7.3A86.4B4.7B

49.18B2A38.4B$64.3B19.A85.4B5.6B49.17B.B2A37.4B$49.2A5.3B4.3B5.4B61.A

34.4B6.4B51.3B2.8B.4B.B37.4B$50.A4.4B2.7B2.4B60.3A33.4B5.A3B53.2B4.7B

43.4B$50.A.AB.18B50.5B5.A21.B13.4B5.A.AB51.B2.B5.6B43.4B$51.2AB.17B

53.4B4.2A19.3B11.4B6.A.A52.B8.4B44.4B$53.18B47.2A6.9B17.6B8.5B8.A53.B

6.A3B45.4B$53.18B48.A7.6B13.4B2.7B3.8B6.3A54.B5.A.AB45.4B$52.18B49.A.

2A5.6B3.B2.2B2.26B6.A62.A.A45.4B$52.18B50.A2.A4.19BD23B69.A45.4B$52.

18B51.2AB3.20BDBD21B.3B62.3A45.4B$52.18B52.14B2A9B3DB2A22B62.A46.4B$

53.16B54.13B2A11BDB2A21B2A107.4B$51.18B55.48B.B2A106.4B$49.A.2A4.12B

55.17B.B5.23B3.B106.4B$47.3AB2A4.13B55.15B10.B2.18B109.4B$46.A4.B4.

15B54.15B13.17B109.4B$47.3A.2A3.16B54.13B14.17B108.4B$49.A.A4.17B55.

13B12.19B105.4B$49.A.A4.16B55.8B4.2A.A11.18B104.4B$50.A7.13B56.6B6.2A

B3A9.4B2.12B103.4B$62.2B2A5B56.5B8.B4.A14.11B103.4B$62.2B2A3B58.B.B9.

2A.3A15.8B105.4B$61.8B59.3B9.A.A17.10B102.4B$62.2B3D3B57.B2AB9.A.A13.

A.2AB.4B2.2A101.4B$62.3BD4B58.2A11.A12.3AB2AB7.A101.4B$63.2B3D2B83.A

4.B10.3A97.4B$63.7B84.3A.2A11.A96.4B$55.A7.6B87.A.A108.4B$54.A.A6.6B

87.A.A107.4B$54.A.A6.5B89.A107.4B$52.3A.2A4.6B196.4B$51.A4.B6.6B194.

4B$52.3AB2AB3.7B193.4B$54.A.2AB.8B193.4B$58.10B192.4B$58.6B2A3B190.4B

$58.6B2A2B5.2A183.4B$58.10B5.A183.4B$57.11B2.BA.A182.4B$57.12B.B2A

182.4B$56.15B183.4B$55.16B182.4B$52.2B.16B99.A81.4B$51.2A18B97.3A80.

4B$51.2AB.17B95.A82.4B$52.B.4B.8B2.3B85.2A8.2A80.4B$59.7B4.2B86.A5.5B

79.4B$60.6B5.B86.A.AB.4B80.4B$62.4B93.2AB.6B4.B72.4B$64.3BA93.10B.B2A

70.4B$65.BA.A76.2A14.12B2A69.4B$66.A.A76.BA2B12.11B.B69.4B$67.A78.ABA

B2.4B3.13B70.4B$68.3A76.2A2B.5B2.12B.2B67.4B$70.A77.25B2A65.4B$149.

24B2A64.4B$150.20B.B.B64.4B$119.A28.B2.20B66.4B$69.2A3.2A27.A15.3A12.

B.3B.4B2.26B64.4B$68.B2AB.B2AB24.3A18.A10.40B62.4B$69.2B2.3B3.B4.4B

12.A20.2A3.B5.2B2A11BDB2A21B4.B57.4B$70.3B.3B.4B4.3B11.2A19.8B3.2B2A

9B3DB2A21B3.2B56.4B$62.2A5.7B.13B11.B21.8B.13BDBD23B3.3B55.4B$63.A5.

23B9.3B19.22BD25B2.4B54.4B$63.A.AB.19B.8B4.6B16.15B.2B2.29B.4B54.4B$

64.2AB.29B2.10B10.18B8.12B.17B54.4B$66.44B3.2B2.19B11.9B2.16B54.4B$

66.33BD3B2A15BD15B12.7B3.10B.4B54.4B$66.33B2D2B2A15BDBD4B.7B18.B4.14B

54.4B$67.33B2D18B3D13B23.12B54.4B$69.31BD21BD14B22.11B54.4B$67.32BD

26B2.8B23.11B53.4B$67.2A3.25B4.13B.4B11.6B24.9B53.4B$68.A3.20B4.B4.7B

.B5.3B12.5B25.9B52.4B$65.3A6.15B7.2A15.4B14.4B20.2A3.9B51.4B$65.A8.

11B12.A15.2A16.3B22.A3.9B50.4B$73.13B8.3A17.A17.4B20.A.A9B50.4B$72.

15B7.A16.3A20.2A21.2A2.6B50.4B$72.16B23.A22.A26.6B49.4B$72.17B46.3A

23.D2B2D2B47.4B$72.16B49.A23.B3D4B2.2A41.4B$74.13B72.4BD7BA.A39.4B$

73.4B.2B2A5B72.11B3.A38.4B$72.4B2.2B2A3B74.5B2A4B3.2A36.4B$71.B2AB2.

8B74.5B2A3B41.4B$71.2BA4.2B3D3B73.10B40.4B$70.3A5.3BD4B73.9B40.4B$70.

AB7.2B3D2B73.9B39.4B$79.7B74.8B38.4B$71.A7.6B74.8B38.4B$70.A.A6.6B75.

6B38.4B$70.A.A6.5B70.2A4.6B37.4B$68.3A.2A4.6B71.A4.6B36.4B$67.A4.B.B

4.6B70.A.AB.7B34.4B$68.3AB2A2B2.7B71.2AB2.6B33.4B$70.A.2A10B74.8B33.

4B$74.10B74.8B32.4B$74.6B2A3B74.8B30.4B$74.6B2A2B5.2A69.7B8.A20.4B$

74.10B5.A71.7B5.3A19.4B$73.11B2.BA.A71.2B3D2B4.A21.4B$73.12B.B2A72.2B

D4B4.2A19.4B$72.15B74.B3D4B.4B18.4B$71.16B74.11B19.4B$68.2B.16B74.12B

17.4B$67.2A18B74.12B16.4B$67.2AB.17B74.11B15.4B$68.B.4B.8B2.4B76.9B

13.4B$75.7B4.4B74.10B.2B9.4B$76.6B5.4B62.3B4.B.16B7.4B$78.4B6.4B61.

28B3.4B$80.3BA5.4B59.2A33B$81.BA.A5.4B58.2A32B$82.A.A6.4B58.B.30B$83.

A8.4B59.29B$84.3A6.4B60.25B$86.A7.4B60.B5.17B$167.14B$167.14B$168.2B

4.3B$167.2B6.B$166.B2AB$167.2A14$114.4B$16.B.C.B.B.B.B.B.B.B.B.B.B.B.

B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B

.B.5B$16.C3BC100B$16.5BC40B5C55B.B$16.C4BC39BC4BC56B2A$16.B5C44BC56B

2A$16.45BC3BC55B2.B$17.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.

C.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B.B2.2B$119.B2A$

120.A.A.2A$118.A.A.2A.A$118.2A!

It would be nice to reduce the circuitry by as much as possible, though. How can this be done with fewer eater2s, but if possible without building eater2s in close proximity to other still lifes?