Right now we have quite a few tanks, and more DPS warriors wouldn't hurt us.  Dreadwind, Gnomebiter, Caanon and Zuwani now are all Prot spec warriors.  

You can do whatever build you want, but just have the ability to strap on a shield, pull out a one-hander and save a mage from his death at the hands of burning mobs!

Zuwani and Gnome were both non-Prot warriors until just recently, but they always had the ability to jump into defensive stance when we needed them to.  This is why we let them play such foolish builds for so long!  

;)