im just gonna wait and see how blizzard will do this it all depends on how original they gonna make it
Example 1. only Alliance paladins & only horde that can be shamans or not
2. texture updates or not cause original mean less loading stress on pc means more accounts we can run
but i would prolly at least have 1 of each class in my team for buffs/portals etc then add as much ranged classes as possible