For the hell of it i cannot decide what to level next. My Paladin main is 90 and i'm raiding 3 days a week with him.
When i'm done raiding i want to level something new but i cannot decide what. I have almost every class at 85 (except hunter/DK) and i always hang on a character for 10-30 mins and then and i want to play something else.
Should i just delete everything else and keep one char that i will level?
Don't delete anything, having them is doing absolutely no harm.
What would deleting then do for you?
If day level a Shaman or Druid. You get tank, heal, and several dps specs if you go Druid, or 2 fun dps specs or healer if you go Shaman.
My only gripe with Shamans though, they took off the bar that drops all your totems at once, which I thought was a nice change for the class, but they're still fun.