If they haven't already been mentioned:
1. When selecting multiple objects while holding shift, re-selecting and already selected object needs to deselect it. As it is now I must start over if I click the wrong object.
2. PNG images need to have a clear background instead of a black square in the editor.
3. The ability to lock objects in place, once locked they can still be selected, but not moved.
When you speak - You repeat what you already know.
When you listen - You learn.