Comment 2 for bug 285888

The GTK user interface actually does attempt to do that: it shows you a list of all the things it wants to do and lets the user decide to ignore some of the stuff. The user can also not click the "Cleanup" button. Thus, to see the obsolete packages, they can start system-cleaner-gtk, and click on "Close".

It seems though that this is not enough. I'm happy to discuss improvements: do you have a suggestion for how to improve things? Would it be good if the program would ask for a confirmation after the user clicks on the "Cleanup" button?