3D CSG editing

I think you shouldn't change the interface much, moving away from Leadwerks standards further and further. I'm all for what you're doing in terms of moving the editor to a new framework with a dark theme, etc., but it seems to me (as someone who has spent over 5000 hours working on SALVATIONLAND in the editor) that the interface is perfect and as intuitive as possible. What I see in the screenshots only confirms that you are fixing bugs and making the classic fresher, but please don't go too far and don't change everything fundamentally. This is a dangerous path that can only make things worse.
P.S. I'm sure you need to drop those wireframe icons on the right panel and go back to the color ones from previous Ultra versions. They look much better and do not distract the eye at all.

I think the controls for brush editing in the 2D viewports will be nearly the same as Leadwerks, although position / scale will probably be separate tools.

17 minutes ago, Josh said:

I think the controls for brush editing in the 2D viewports will be nearly the same as Leadwerks, although position / scale will probably be separate tools.

Yes, I think this is the right decision.