Well my friend had an interesting idea that he gave to me.
What if you took the 2 factions, and split them up into 5 factions?
Undead& Blood Elf (love of chaos)
Orc& Troll (Dont need to explain this)
Tauren& Dranei (Love for nature)
Gnome&Dwarf (see for orc& troll)
Night Elf& Human (Share the most humanoid resemblenses of all races)
Tell me what you think?