Hm, this looks quite promising. The dark theme looks really nice, and the LOD idea was much needed for the editor. I am seeing a bit of regression (which I know, you admitted that in the original post, but please, allow me to nitpick a little).
I feel like leaving a bunch of different LLM related files (Gemini, Claude, Qwen) does feel a bit like its polluting the codebase. I certainly don't have an issue with using LLMs to assist with programming (I do the same), but when searching around the codebase from the root directory, it does create a bit of noise. I feel like these files are more personal to the user developing and shouldn't be a part of the codebase. And I'm noticing on things like PR's like 3 different coding agent bots jump in. Seems a little excessive, no? Maybe just one good one?
I also think you should really try not to break critical things, like right now the scripting is completely broken. It might be better in the future to just keep all functionality, and only push commits that either do a complete refactor, or don't break things (which I get, maybe with the monolithic design of RME that wasn't possible).
Zooming far out and back in causes a black screen. And a lot of the software just in general, it's like the direction and ideas are nice, but I feel like you need to focus less on adding functionality and make sure what you have added is actually working fully properly, stable, and maintainable. Like right now you have 28 of your own open PR's, that's quite a bit. RME does have quite a few old-school quirks about it, but it's also really quite stable for what it is. Stability is often times more important than new features.
Regardless, this is pretty awesome. I only say my small gripes because I see potential and would like to be able to actually use this.
If it was just a tad less buggy and more stable/organized I would love to jump in more and help you fix things up and submit some PR's, but maybe I will wait a bit to see where this goes because at the moment, it does feel a little all over the place. I respect what you are trying to do with this though, and for releasing it for all to use!