[Suggestion], filter brushes based on 3D camera view
It would be nice to have a new Filter Toolbar option for filtering out ALL brushes that are not visible within the camera view, this also includes brushes that are hidden behind other brushes.
Regardless of distance from the camera, if it is visible than the brush is shown, if it is not, then it is hidden - this would also include newly created brushes that are created outside of the camera view.
This would make working on "sections" of a map (rooms) a lot easier.