well Wardens are a "night elf" thingie you know. you need to flesh out the idea abit : how do other races become wardens? etc etc.
IMO they can introduce the NE wardens in some way by giving NEs paladins, along with a plate transmog set. Tauren got the sun-warrior in form of Paladins. and seeing that Wardens are actually "the right hand of law" in the NE society Paladin fits them very well.
... also chakrams should be introduced as a 2-h transmog weapon.