User blog comment:Antares2/ME3 Multiplayer Ideas/@comment-5032689-20120509060855

Parts of it aren't feasible, they're not going to create entirely new worlds (and thus commit them to canon) for a multiplayer DLC, so Kahje and Dekkuna aren't likely. All of the multiplayer maps that are in use now are repurposed. I think that parts of Grissom Academy could be repurposed easily, perhaps part of the citadel, and if we're just taking stuff from ME2 (not sure how compatable things are) Illium and the shops area at Omega also would work. Keep in mind that all of the maps are confined but not too cramped, with very few places that don't have multiple firing vectors. Well, Firebase Condor kinda breaks this, but Firebase Condor is exceptionally shitty.

I like where you're going with this.