I'm going to be disappointed if Blizzard goes with a shapeshifting class over a bow user. Ranger types have been a staple of the series since Diablo I, and the first class I always roll.
The last class is probably a physical ranged type. How about a Mongolian? The Mongols were some of the best archers who ever lived. I can foresee some complaining that this creates too many Asian classes, but whatever.
Male in real life, I'll play both. For some reason I like to do the inverse of most people; my melee classes are always female and my casters are male.