I don't see why there can't be a firmware update to allow mapping of PS buttons to which ever key on the board, or mouse you want.
I'd try to play some games (fighters only) using the keyboard. Works wonders for Marvel Vs. Capcom 1. I need a 4 face button pad like the PS3 provides for MvC2, though... I play the two games completely different.
Now that I think about it.. Tekken 6 on a keyboard would be way too awesome.








