I apologize yet again for being in a tired daze,
thankfully for myself(Like you care lol
) the slave labor will end soon.
If we port trem to a new engine(Xreal has lots of bugs from what I hear, bad idea?) we won't have to worry about new textures because people will gain an interest in helping trem and see the ugly bottleneck of crap textures.
Plus materials, trem has the capacity but they are a pain in the butt to utilize and create.
Materials will make the game look really nice if we have more variety and control.
Now a new engine gives us new rendering capacity, in speed because we won't have a decade old engine and
features like bump mapping,(insert here, I could go on forever) ease of use, etc. Plus maybe a less confusing (at least I think) engine.
Porting as everybody knows will be a pain,
and we need a competent leader who coordinates getting trem to the new engine.
Do NOT care about how good it looks initially,
but what it can look like with new textures, models, etc when you have a more capable engine.
If we had the same old trem in a new engine we'd be in good shape because we can bug test, develop,etc and make it more visually appealing.
(I know nothing about porting, I do know 3D and how it works)
Keep in mind bloom, and such look like crap when a newbie uses all the idiot proof features that look bad unless used properly.
Now realistically within the reach or capacity of a single individual(yeah a single guy can port but that's not going to happen) we can create/acquire textures(they have to be 100% free, proper licensing or made yourself.

) and create a patch/mod/upgrade with a slew of new textures to replace all the default map ones. Most custom maps utilize default textures so many maps will look better.
New models are more complex, not very, but if your going to upgrade their textures don't waste your time, redo the models then texture them.
The complainers can stay on pure servers and use their low res stuff,
better yet the devs will allow us to use "this" mod or, I doubt officially integrate it into trem.