A game with 8 players.

Done. XH is like L, G is like XL.
If it's 2x2x2x2, you can also add portals to the ally's spawn point.

Awesome! I think this is something that should be tested; it will definitely be more fun than 8xM. Portals to the ally are an interesting idea. But it would probably be better if there was an external teleport in each zone by default, and if you could use it to get to the ally's cities, is that possible?