#0 - Dec. 2, 2006, 12:23 a.m.
After killing a ton of dragonkin, you could get a small get a small, permanent passive skill that increases your damage against dragonkin (like 5% melee and spell damage).
Killing enough fire elementals could give you a permanent 10 fire resist.
Killing "big" raid bosses like Rag or Nefarian could give you a large chunk of the quota.
Specific classes could also gain unique titles, i.e. a warrior who has every weapon skill maxed out could get the Weapon Master title (and maybe a small +hit buff). A priest could get a Divine Grace title for healing 500 different players.
It'd add a deeper sense of development for your character, and the titles could be displayed next to your name in lieu of your rank.
Just a thought.