I wish there were more races and classes in LOTRO. I am missing several of those. I love to play this game and almost everything about it is fantastic. The thing that is always bothering me is the lack of class and race. Developers must do something regarding that, because it is the only way to move forward. Everyone would be just happy if developers do such small thing.
I can say that is not a small thing. Designing the new races and classes or anything else in the games is big and time-consuming work. The number so far is just enough, and you should not be bothered with them. More of them are meaning we must have bigger number to choose from. LOTRO has millions of active players, and there are many which will not make such a decision. That is why there are missing classes and races. It is the only way for the game to be appealing to everybody. Lord of the Rings Online is great game, and everything about it is fantastic.