Running such a project is possible even for a sociologist (like me). But it would consume a huge deal of time and energy I would rather devote to actual modding.
Having said that, if someone makes a new map and it's not crap, it has a fair chance of being added to various mods. Some people, for example Civilian, already do this and I added quite a bit of such maps. A whole terrain would be even better, but from my experience it should be done by one person (or a very close collab between two), but after it's done, anyone can make and propose additional mapblocks.
As for the FMP, I have just finished the overhaul for XCF, so now I can start doing the same for the FMP. Shouldn't take terribly long.