+1
Planned
Add ability to "Manage Themes"
Currently we can only Download Themes. We can't remove them if we don't like them. It would be useful to be able to also delete downloaded themes. I would assume that at least one theme must be available for offline maps, so you would probably want to make sure that at least one theme has to remain in offline storage.
Customer support service by UserEcho
I think this is useful but not critical.... Users still can delete and add themes by going to the folder where they are stored.
GCDroid has built-in themes, so no external ones are needed (yes, one is always needed, but I default to internal).
I'm sure I'll add this at one point but likely not in the next release.