I suggest a draft of 5 templates and control:
1. 2sm4d(3) - 8+4+1 (maybe 10+6+1?)
2. M200 (draft of 2sm2s, balance, skirmish) - 8+4+1
3. Diamond - 16+8+1
4. Jebus Cross - 16+8+1
5. 8mm6a - 16+8+1
What do you think?
Therefore, it's better to replace 8mm6a with something L-U/L+U. Obvious options are Mini-Nosta and Anarchy.
And on the sm-map, you really need +6 for a normal game, maybe 12+6+1?
And specify in the rules that latecomers must play M-200.