Wouldn't it be the other way around? With 4k, OTKs become a looooot easier to pull off. Like... Really easy. Your chain burn example from earlier? One good hand ends the game turn 2 main phase 1. Quasar? Double tap for game. Any inherent SS and punch for at least 3200 before Cowboy for game?

I argue 8000 because the other argument doesn't stick.