I find it annoying having to keep testing my game to check if my GUI is in the right place, so I am suggesting a GUI preview, where it shows your GUI on a blank background. ;D
Perhaps in a Room preview it can display it. A good Idea I think, but of course I could live without it. But I would love to have it anyways, it would make it less frustrating than to keep testing the game.
Joey
I don't know really - would it be any quicker to have an in-editor option than just pressing Ctrl+T at the moment to test it?
It would be nice I suppose... but I think other things would benefit from an in editor preview, like animation.