Personally, I prefer the rectangular maps, then center MS are second and lastly are WTF maps... So odd and confuzling...
Anywho, I like the crashed ship idea, although, I don't know if we want to have a major portion of the map on an alien world. I think it'd work well having a large shaceship (like bast sized) that crashed on an alien world, but the map is all on the ship (maybe a little section here or there on the planet, or exposing the alien landscape). Having a crashed ship allows for a malfunctioning and destroyed type of look (also, very cool 'problems' with the ship
). You know, flickering lights, half-opening doors, that sort of thing. What would be cool is if we could have an airlock room or a room with a hole in the hull where it'd hurt marines (possibly aliens, although not if they're from
the world the ship crashed on, thus why they're there), and the HA would be immune to it, as they obviously have their own oxygen supply since they're unaffected by spores.