Can't wait to see those higher res naga models. I have been keeping an eye on that project. It will definately be epic (especially with nage in it)
I never really liked the mix between BE, Naga, and Draenei wc3. There is too much variety. So here is a suggestion. Since the races have been together for so long and since their unity is growing stronger, I suggest giving them a common theme, so that they feel like one race. You should come up with a new and unique appearance (armor and weapons) and make it so that all 3 sub races use it. If you keep it so that the naga have their typical coral/ruins style, BE with there red/magical armor style, and Draenei with their robes, then it won't give the feel of one faction. So make all their armor and weapons with one basic design. Just a suggestion.