Hey there Bunny! Fantastic work! I think literally just adding the Undo and redo buttons is a real lifesaver TBH, and generally speaking its just wonderful!
The Only thing negative I currently have to say is that sometimes I notice when I'm using the triggers on the timeline that it will either not save the trigger, or just delete everything I had saved in said trigger. Its very strange. (Essentially, I'll go into a trigger, and add the triggers into it and then hit the done button, but the triggers will not have saved on the timeline, so I'll have to go back in and add them again. additionally for some reason the Copy paste commands on keyboard were causing it to kick out of the triggers tab.)
Cheers and I hope this helps!