Question to NextGen Maps/Models

[3XIX]

First of all im not trying to destroy something for anyone. Its meant to be additional or maybe standalone, so that people still able to play what they enjoy. Thats what the overall question of this thread is about, finding out what should be aimed not if it should not be done. And i´ve stated that im on a slow notebook myself from 2010 with a graphics card which isnt meant for gaming, but since the engine is this lightweight and the general stuff is already done, it might be a good chance to mod the last bit out of it instead of creating something with a new engine. Less code is the question to performance, overall when im done it will run on my Intel HD 4000 with 60 fps, 20% CPU usuage, 1 GB RAM but maybe full dedicated VRAM due 4k Textures but its worth it if you see what i mean. And dont get it wrong im aiming even higher.
Maybe im trying to find people having the same vision as i do.
https://i.imgur.com/cDzl7D3.jpg