1: Is it possible to set what image of the gallery to a default? So say you had a image you wanted to use to represent a given gallery purpose (kind of like when you set the gallery name)? Would be nice as an option instead of using the last uploaded image.
Np, but that is a good idea.
2: Can we edit the top level gallery name (what says "Gallery" by default?)
Also no, however, that seems like something that can be made to be dynamically produced based on the name of the link in Menu Administration.
3: Is there a way to rename a gallery once it's in place other than making a new one, moving all images to that one, and deleting the old?
Also no, I'm afraid.
Man, bad luck to you with these questions
But some of them are getting changed.