I understand that and i said i don't disagree with what you said earlier, but i still ask with those two rules implimented what would be the point of running the timer, the way we have it now the point of running the timer is the insta win, but if that is gone what is the point in doing it?You forget though that the core problem with Sudden Death, along with the fact that it's random, is that by simply grabbing the ledge, or with knowledge of item spawn points, it becomes virtually impossible to lose, and the match can potentially last forever. If Sudden death occurs, there is absolutely no excuse for losing unless the battlefield is frigate orpheon, at which point the winner is whoever spawns closest to the left. :\
Also Allied to what you said about going under the stage being a spacing tool, that should not be a reason to not think about it, being on the ledge is one of the worst places to be, (unless you can plank) especially if you can't fly under the stage, thus it puts whoever is on the ledge in a disadvantageous situation, which could potencially lead to more offence.