While working on a project, I find that I create several instance variables whose values get set by events while the game is running, and have no purpose being configured in the layout editor. At the same time, those same objects will have a couple variables that DO need to be configured in the layout editor, and those runtime-only variables clutter up the properties window and get in the way. It would be great if I could hide those runtime-only variables from the layout editor, so as to avoid confusing other people who also work on the project.
This is pretty minor in the grand scheme of things, but would still be nice to have.