There is some textures that don't look as good when sawn in the Editor than in a map, but i think that the main reason is that people prefer bad already known textures that take the risk. Thats probably the reason too because some people don't like custom mods.
My reason is that i prefer to know how to use Quake's well before moving to the rest. The same as when i use mainly vanilla Quake instead of mods to map. The only thing that goes out of that rule is Quoth entities that give the mapper the opportunity to do some interesting things and others that would need elaborate setups without Quoth.
Fifth, those textures choices look good. Keep on it.
About WIPs, i would be happy the rest of the year if some of this got released. Just by releasing an unfinished one would be enough.
https://www.quaddicted.com/pipeline