There was an artist on CGTalk maybe 20 years ago that did amazing characters with NURBS, but other then them I can't think of anyone that ever really mastered organic NURBS modeling. Polygons are the way to go for characters.
I am not sure how qualified I am to make critiques as of yet but I can say what I see and think slightly less technically. @TrebleMebbel I like what you have so far I think the basic blocking is looking good. You are going to have to plug the holes in your buildings though. If you leave them empty with no geometry you will…