hmmm I don't understand you...
About the elves, orcs, dwarves...haven't you realised that there are not such creatures in the diablo world? What you want is nearly World of Warcraft. And..in the diablo world you can only use human characters, and vampires are 'evil', so I don't think you could use them. And the Arch-Angel...what can a barbarian do against an arch-angel, who isa totally divine creature?
Hmmm Anyways, they type of characters changed between D1 and D2, so I suposse they all will change for D3, if there is a D3
This is what I would change for D3:
- Switch between Male and Female
- Classes which "evolve"*
- Choose between different type of voices
* if you have played Ragnarok Online you know what I mean. You choose a class..for example Swordsman. When you get to a certain level, for example, 40, you can change that class to a similar one, but more powerful, for example, Knight. With that new class you have new skills that improove the ones you had and that kind of things. There could be 3rd classes, for exple, at level 80.