The new Orcs Vs. Humans?

I was sitting in IRC chat, discussing the beta, and a friend going by the name MrCynical pointed out that it seems Orcs get more play, again, in this expansion than his beloved undead, who you would think have more reason to want to take down the Lich King. I spent time last night exploring a bit and found the Westfall based human settlements in Grizzly Hills, which I noted made major human settlements in Howling Fjord, Borean Tundra, and Grizzly Hills, in addition to a human leading the Kirin' Tor, Rhonin.

I guess the two separate points struck me as odd. Then I realized something: The majority of the conflicts in the game from start to now seem to boil down to the hatred between Orcs and Humans. In fact, if you look back through the entire franchise, there seems to be a pivotal connection that boils all battles down to these two races. The biggest connection is that these two are the lead races of their faction, making them the big center pieces of many conflicts.

Sure, we have Undead and Humans, Orcs and Night Elves, Orcs and Dwarves, and Draenei and Blood Elves, but most of the major stuff, like the expansions and stuff, is pitting those two lead races against each other. From the start of Warcraft to the upcoming Wrath of the Lich King, these two races have taken the lead in the events of the people of Azeroth and Outlands. What do you think about this breakdown? Would you like to see more major roles for other races? Or are you happy with these two races sharing the lead of the game? Let me know in the comments.