Jesus! This needs to be posted in every page of this thread:

1- Well optimized DX9 can look and perform great.
2- The game is on life support mode, even engine optimization as much as it's needed needs to be lower in priority than gameplay and content.
3- Crystal Tools isn't Yoshida's direct domain.

So again, DX10/11 isn't happening for this game any time soon, as much as I would love it, it just doesn't make any sense.