I don't know if there's any call for this, but I'd quite like the ability to, under the Tools>Uninstall list, sort the programs into user-defined categories or groups. That way, I can easily sort out the games, the social/internet apps, the office apps, etc - all the programs I know the function/purpose of and deliberately put there - from the things I am less certain of. Not only would this make it simpler to track down programs I no longer want, it would also make it easier to single out the programs I'm not sure about, and look up what they really are (maybe finding some sly malware in the process).
It should be understood that such a feature would in no way imply that ungrouped programs are dangerous, nor that programs put into groups (by the user, not the program) are safe. It's simply a more efficient way of searching the programs list, especially useful for those with extensive lists of installed applications etc.