I agree i would love to see a dual weaponed (pistols or crossbows) petless hunter. Or a hunter that could summon pets from the surrounding area to do a special attack for a limited time, ala pet whisperer ability.
Rogues could use some loving by offering them more group/raid utility, trap and espionage specialist to reduce raid damage, increase dps etc. Give them an arsenal of geeky high tech weapons to use.
Shaman use to be able to tank in BC (hence the 2 hand melee weapon ability, and i dont mean dual wield) It would be interesting to see that ability rez'd considering shaman, when compared to other classes, are really somewhat lackluster