Well I mean this will probably sound stupid, but any time I'd be fighting with my friends and roomates, I would purposefully NOT camp the ledge just so that they could get back on. I feel like the fun is completely removed from a kill by ledge camping. A proper kill in smash should be epic and methodical, perfect timing, perfect execution, etc etc. It's just such a lame way to win. I entered a brawl tournament once without ever actually playing brawl before (needless to say I was absolutely terrible, fox user on melee, did not acclimate fast lol), but I would get knocked off stage no more than like 5 virtual feet, and these motherfudgers were ALL throwing themselves off stage to get that ledge grab. I mean when that becomes the premise for your victory, it's just sad.
No one likes the people that spam haduken, I don't see why this is considered any better. I know it's just a video game, and I shouldn't take it to heart or anything, but man, it just totally annihilates any sense of honor or respect.