Several months ago, someone started implementing and designing a new Editor with proper UI. Unfortunately, he had to stop after ~2 months (private circumstances). I should create screenshots of his design so far and think what to do next. (Perhaps look for someone else, perhaps do it myself eventually.)

Doing it myself would be possible, but it would be very time-consuming: First, I either have to finish my own improved GUI library, or I have to learn another GUI library. (The current Editor uses my (well... failed) UI library project. Continuing with that is not really an option if I want proper UI.) Second, I will have to rewrite the entire UI of the Editor. I expect this to take me at least a year (and no other features would be developed in that year).

Here are the screenshots of the designs he made:

If I find time to rewrite the Editor, I should also add language support while rewriting it.