I'm thinking we should consider looking for kill percents on all characters on the roster. At the very least, prioritizing the top tiers and bad matchups in the game (Sheik, Rosalina, Zero Suit Samus, Luigi, Sonic, Pikachu), and then work our way from there. Primarily focusing on kill moves, such as UTilt, Bair, Uair, Fair, and even DThrow when attritioning an opponent.
Perhaps we can go to Battlefield and test the default kill options on the ledge and center stage, so we have a differentiation between midscreen and ledge kills. Enemy stays grounded, as inherently, if they're in the air, they're going to die at a lower percentage than if they're on the ground.
I'll make a separate topic about this in due time, but having just made one about ledge trumping, I would be more comfortable waiting a day or two. If anyone wants to contribute to the matter here, I more than welcome it.