1. back button should be re-placed IMO (the place where it is now is probably the last place your eye will look at for this button)
2. some boxes (like cube -> background images) prevent mouse-scrolling
3. we shouldn't press those tiny-triangles twice for changing an action option (like, Selection -> key-bindings -> select single --- key bindings is redundant).
4. group's change-glow-color option is un-changeable.
5. no way to make super + mouse-drag select groups.