Are you ever planning on doing heroics? Because it is the same kind of grind. I get burned out on various things a lot and am glad I have such a diverse pool of toons. Sometimes I just level other toons, sometimes heroics, sometimes BGs.

BTW, gearing up with Outland blues really isn't worth it anymore. once you get to outland you can pretty much replace all that gear quickly with much improved NR greens.