USER PICTURE ICONS in bookmarks/favorites (or even all folders)
The folder icons are plain and they don't stand out (I found myself staring at them) ... It could be a 'deal maker' if you made this so you could have user picture icons for the folders - instant recognition of where to go. (I don't think anybody else does this, so you would stand out from all the look alikes.)
I agree, being able to utilize our own icons would be great in my opinion.