As always when these threads come up by top 3 never changes -
1 - Archmage Antonidas: I see him more as a specialist mage, opting for defensive, shield, supportive enchantments, time magic and teleportation. A movement away from the more traditional assassin (might overlap a little with Medihv unfortunately)
2 - Admiral Daelin Proudmoore: I see him as a warrior/specialist. Having navel based abilities + combat supportive role.
3 - Maiev: No explanation here.
I've actually added a fourth onto the list. I really wouldn't mind seeing one of the dragon aspects. Ysera or Deathwing particularly.