I don't know how instantly make game run better for consumers can't be toward the top of the "To Do" list. Really I mean as stated countless times nearly anyone playing this game has a card capable of DX 10 and 11 so there is NO excuse to not have DX 10 or 11 and more so when the performance of the game is such a big problem for so many people.
EDIT: Is it evil of me to think that SE not looking into Dx10/11 means they really aren't listening to everyone? I mean it's easily one of the most requested things and for good reason. It can easily help improve the game and is really a no brainier.