Performance is an issue for several people. So even if these cards fit a minimum requirement in theory, in practice raising the graphical requirement will cause many to be unable to play the game:
I think it would be prudent to address the performance issues people have prior to improving graphics. Especially since this seems to be a software issue rather than hardware.
Though I understand this discussion is more of a wishlist on future changes, with the assumption being that those changes will be implemented flawlessly.