I'd like to see a scheduler.
I'd also like to have CCleaner find files hidden by rootkits and checkboxes next to the results so I can choose to delete those really hidden bits of crap
I'd also like a registry snapshot so I can see whats happened since the last time I ran CCleaner and checkboxes to remove them.
But hey... this is such a great little prog and I use it all the time so this isnt a complaint but these features would make it just that bit better. My ideal direction for your prog would be to combine what it does now with the features of hijackthis and spybot.