I would love for the devs to put a bit more attention towards the Frame editor, specifically:
* Easier editing of frames (multi-selection, drag and drop, copy / paste, preview, mass-editing of common attributes in multi-selection, copy / paste entire animation collections)
* Propagate Origin and / or Image Points to all frames. If I add an Image Point to a sprite, make it an option to have it visible on the entire object instead per frame!
* Add a simple pixel-pen tool for quick prototyping, it would be very beneficial! It doesn't have to be fancy -- I will use an external software for the fancy stuff!