If they did add DX10/D11 wont that mean we need about setup of 4 video cards? Seeing how even people with 2 are having issue with this game. I think if they fix the core system i think anyone could play this game even dx11 but sadly SE does not want to add.

In 3years when this game look bad SE would just make a update DX10 and the game would look awesome again. 2-3years later DX11 and once again the game would be better so i think this is the mind set they looking into when it come with dx10/11.