Perhaps unsurprisingly, I'd be willing to do a Nationgen game. 0.5 is fairly stable, and while I could sit here and enumerate bugs and shortcomings in it, they're probably ones that most people using it have never seen. I think Elmokki is on hiatus (hopefully not permanently), so while there was talk in early August of a new version that fixed/revamped some things and added my Amazons (and yet more stuff for the random naming data) into the mix of nations, it doesn't appear to be in the offing. FWIW.
As of 0.5, NG spawns "generic" humans, "Asian" humans, "African" humans, Abysians, Caelians, terrestrial Atlantians, Agarthans, Fomorians, Vanir, Tuatha, lizards, apes, and of course hoburgs, in case anyone hasn't been keeping up. They'll do random heros for the nations too, hehehe.
The big thing with an NG game would be that we'd be on the honor system on how to fairly (or if you prefer, reasonably) generate nations - in principle most methods we could propose are subject to abuse. I think the last game required everyone to submit a nation generated from a 10-nation seed, but that may have been it. With the current version, you can make the engine assemble a disparate mass of individual nation seeds, so that's a bit less work for whoever's admin'ing (NOT IT!).