wait for the "classic plus" servers. if they ever come.
on topic, it should be expected that pure dps, glass-cannon classes such as the rogue, mage, and maybe hunter, should be at the top of the dps meters.
and even so, we're talking about like 1% difference from the person above and below you in the damage meters.
that's why damage meters ruin games.
if ur not going for that server-first and stuff, then you shouldnt worry about min-maxing your class combos, and even bring ferals/boomkins/retris.. the bosses will still fall.
at least until naxx.
also, might wanna consider having a second option in the game for a tank, like adding items that would make bears viable,
give protadins a taunt and some mana regen. give pets aoe resistance.
oomkins and SPs some mana regen, and so on... while of course never having them be as good as the glass cannon dpses.