I'm a big fan of the manager, and I do think they can be used to really push some under utilized talent in the WWE.
One person who I think would make a great manager is Michal Cole. He already draws enormous heat and you can see he really wants to be involved in a story line. Hell when he's on cometary he doesn't give cometary, he only talks about story line. I think he would do a great job giving back stage interviews for his superstars, and really push some young talent far.