I guess my biggest competitive reason to choose Pit is his ability to fly pretty much anywhere and come back to the stage. This kid is nigh impossible to gimp unless you hit him out of his Wings of Icarus...

When I feel like being trollish in Basic Brawl...

*arrow spam arrow spam arrow spam arrow spam* *arrow hits someone* THE FIGHT IS ON!!!

Otherwise, I do see some value in using them to get a certain reaction out of the opponent... But I haven't found a way to make it work for me yet. ^^; 'Course, I'm not a Marth, but hey.