Well you can pretty much sign up for anything.
As for the map, we don't have a full-time mapper atm so we can't tell you any really specific stuff about it. It'll of course look a bit similar to the MTR map because we share a setting and most of the factions, but the region layout will be somewhat different.

As for the EB comparison: I hope we won't have a "war" between MA and MTR really. We try to do our best, and they do, too, and I'm sure both mods will be highly enjoyable.
Thanks for the compliment though.