I stupidly deleted my 85 Druid and Mage about a year ago. Now friends want to play in preparation for Draenor and I'm currently holding a ticket to get them back.
It's been over a year... I'm not going to hold my breath.
But I've been leveling a paladin in the meantime. The game is strange to me now, I started playing in '06 and stopped around 2012/2013. I healed Deadmines today and everything happened so fast. Had no idea what was going on. Hardly healed the tank at all. I don't even think they needed me.
Hopefully I can find my feet again.
Pretty sure they can restore really high level characters after that long, good luck! Worst case, it doesn't take too too long to level anymore.
Tank self healing is crazy good in the world of MoP. It's going back down a bit (supposedly) in WoD.