Which alt should I level?

• Aksana the Draenei Mage. Currently frost but it's getting old. I'd be interested in trying arcane.

• Muriel the Human Priest. My holy healer. She's shadow now at 72, but it's getting tiring too. At 80 I would DPS or heal as needed.

• Makawee the Draenei Shaman. Elemental and 65, but would also consider trying enhancement and resto. I got tired of her but my interest has been renewed due to some recent and upcomming changes.