So far it's not the Death Knight or battlegrounds that I find the most intriguing about Lich King, it's the silly things.
I can't believe they solved the pet problem. I can have all my pets with me and they won't take any bag space! Yay!
I can also have all my mounts (In assorted colors) with me and they won't take any space! Double Yay!
These are the most recent additions to my collection:
The worg pup:
And the smolderweb spider:
Both pets are from the Kibler's Pets quests in Blackrock Spire.
Both of them get second looks from people especially the worg pup. "Where'd you get a dog?"
At first I didn't care for the spider, but after running around with him in Winterspring and watching him churn up the snow, I think he is one of my favorites.
Back to that Death Knight. Plaguelands? Yuck. Worst zone in the game. That alone has tempered my enthusiasm somewhat, but I do like the look of the Night Elf Death Knight and the fact that you are initially forced to go with green hair :)
The epic quest you get at the beginning is really nice, so I'll certainly give it a shot, but I'll be out of the Plaguelands first chance I get!