If you would like to help bring Tekken to the Wii, you can go to the Namco website and reply there of how much you want the game (you'll have to register first) and you can sign this petition (finally somebody set it up).
Here are the links:
http://forums.namcobandaigames.com/showthread.php?t=5374
http://www.petitiononline.com/tkn6fw/petition.html