Dont do it. Not worth coming to the server. I need to get my 10 toons out.
This specific toon you posted with doesn't appear very accomplished. No Firelands content down, not to mention several final bosses still left for you to kill .. well you could have alts which completed the content, I'll grant you that much.
Anyway, if you're not happy here, by all means go, it's a great game to be enjoyed, hopefully you can enjoy it and be happy somewhere. Just remember, no matter where you go, "There YOU are".
As for Lolzimbig, he wants to return, i.e. he was here before, which directly implies that he misses his old stomping grounds as compared to where he's been the past year. I say, welcome back to the guy who wants to be here ... There's never an end to welcomed positive energy.
Moondrelis, can't say we will miss you, sorry ... but it really doesn't look like I will :/