1) My thoughts were to give round things more polygons, to make them, well, more roundish. Also clean the textures up and/or add more/better details. But If we're going to change the texture's we need to keep it themed. As in all those asteroid bases sure could use some more poly's and your texture, Old Dragon.
2) I'm not sure how much is possible in making Nexus less buggy. I think a lot of the "crashes" are hardcoded. But we can do what we can do; Go over mission files.
3) I'm an animator. So, new ships and textures are not my thing. For any new missions I wish we had a better mission editor, or else we'll be fiddling in a lot in code.
4) Arparso. Also, maybe CmdrKoenig.
Also, Nexus news on the horizon;
http://steamcommunity.com/app/6420/discussions/0/451852571446952440/?tscn=1454707823