This one is so incredibly simple: I want FCP to be able to sort the clips in my bin by the date I added them to the bin. When I work on a big project over multiple days, sometimes I need to add a shot at a late date, and it's sometimes tricky to find it after I've added it. If I've got a hundred shots in a bin, finding the one I just dropped in there, when they're sorted by name or whatever, takes longer than it would if I could just sort by date/time added and find it at the very top or bottom.