I believe that if you want a clean computer, that you should be able to set dates to have your computer automatically cleaned at such-and-such date and at such-and-such time. I'm not sure if this has been suggested before or not, but I'd like to see a nice Scheduler in the CCleaner.
Thanks, Pie
EDIT: Also I think that the CCleaner should help you move, rename, and delete things. For instance: You try to delete a file, but it says "File cannot be deleted! Source in use!" or etc. Then a pop-up from CCleaner will appear and show all the processes that are using the file and you should be able to "Clean-Up" the processes, or Kill the Processes, thus enabling you to delete these files, rename them, or move them.
Another idea:
CCleaner File Shredder, something that will allow you to put a file, or folder, into the shredder and shred it.
Just a few ideas to look at
