As for the point being disputed, there's no difference in tracking controller or player when it comes to solving the crippling issue of players swapping seats that has plagued gamers and rendered split-screen gaming such a miserable chore (ie. is this really an issue that needs solving?!). .
I would say removing the need to worry about controllers, players and seat position is indeed important. Would I pay an extra 50 to 100 bucks to not have to worry about, probably not, but at least it's a known issue that plagues most folks to one extent or the other.