In the end it all comes down to what u like the most. Some ppl love to level up boxing teams, and think they will have valuable accounts if they level many chars. Guess what? they will.
But i am too tired to level chars again. I leveled 5 70's solo and a team of 5 boxing. Theres a chance to try 5 locks and 5 hunters, but thats all, i dont think i can level again a whole team, it's too much XP :P
So, it comes down to what u like to do the most, with or without a close expansion, i like to gear up.