People deleting posts has a way of biting you in the ass... When they realize that they've said something they really really shouldn't before a moderator or admin sees it... or you get posts dissapearing halfway down a thread when someone decides they want to change what they're arguing for and don't want people to be able to show what they said before... and all kinds of weird things
I want a button that'll email 50 copies of the phrase "Stupid is as stupid does" to the person in question... only to be active if the person says something completely wrong..."Rollins gutting Cobra" for instance...
Anyway, in all seriousness I think a upload system would be useful.