The current UI is ugly and is difficult to search for a specific item, using ribbon UI (as in Office2010) would be nicer as it would regroup categorized items in a specific tab making it easier to switch between other items, it would also make the program more minimal and visually appealing. Most new applications are adopting the Ribbon UI
I could only hope CCleaner never looks like the UI in that screenshot.
Isn't CCleaner "ribbonized" already?
Meaning, you already DO click a tab to switch items.
They are just on the left, instead of the top.
Nothing wrong with that, in my opinion.