Actually, I wouldn't be opposed to multiple English versions either, assuming it is not going to make the game harder to patch or take longer to produce, etc. There are a limited number of words to check for and change, after all.
"why not British spelling if a games comes from Europe..."
Isn't that what was being complained about here?
"...and the American spelling from American games?"
I'm pretty sure they already do that. <img src="/ubbthreads/images/graemlins/silly.gif" alt="" />