It didnt. I doubt it ever will at this rate.
http://www.gamesas.com/index.php?/topic/1129268-marts-mutant-mod-for-nv/
I stopped playing NV until the mod scene pics up, I just cant play a game with guns that doesnt have things to shoot.
Ah..that's just...unfortunate. I can't even imagine playing FO 3 without MMM now.
And you're right about NV though, as much as i love that game, it's very quest oriented ..to a fault. Beyond that, there's really not much to do there if you want to explore etc.
that said, there's a mod called IWS which basically increased the wasteland spawns.... nice alternative for those of us who are waiting for MMM for NV.