Ye those classes were broken at Mop and Wod but I still remember not seeing 7 of them in the same match (in one faction) like hunters nowadays. You could still play whatever you like and kick ass if you were good.
Wotlk enchanting is the fastest and easiest to level up, you just buy and disenchant the gear that sells the intendent vendors, you just need some gold. Wotlk enchanting has an hability learnt at 25 pts I guess were you could get the common mats from the epic ones.