You should be horde on drak' thul, cause alliance sucks on that realm. You should be a goblin rogue. Rogues are always fun.
Rogue is a pretty fun class to play, honestly. If you're looking for PVP, you should almost always choose Alliance, for they have the better PVP racials. But to answer your server question, it honestly depends on which server is the highest population.
More players, more PVP to go around. I play on Dragonmaw (PVP), there's some PVP around, but really nothing compared to some of the bigger servers. In the end, it's all really up to what class you find to be the most fun, and the most skilled at.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.