what files would you consider unnecessary?
will you tell me what you want to delete before you do it?
will you let me white list files/dirs/apps?
will this affect other users or just the current logged in user?
will you prevent this from running if you don't have a new list after I upgrade/downgrade to a different OS version?
What features will exist that aren't found in current solutions, such as App Cleaner?
how have you arrived at a value of $25.00 for an app you haven't defined features for and have not created yet?
too many questions, not enough time...