I'm sure a request like this has been posted before, but what about the ability for CCleaner to clean multiple windows user profiles at once? As it stands, you have to log into each account, install CCleaner again, or manually navigate to C:\Program Files\CCleaner and run the .exe in order to use CCleaner on multiple accounts.
It's not a big hassle to do all that, but a change like this would make CCleaner a lot easier to use, at least in my opinion. Or at least more convenient in a situation with multiple user profiles.
Keep up the great work!