I had an idea that there could be individual save icons (Save to disk and Save to account/Publish) up the top of the screen on Powder Toy, instead of holding down Ctrl down the bottom. I also though that if there was save, then there should be open (Open from disk, Open from account and Browse published saves) up the top of the screen too

I also thought of an options menu where you could customise Powder Toy (Screen size, having save, open, etc at the top or bottom of the screen)