1) Get WoW
2) Start characters on a PvP server.
3) See how the gameplay changes when 1) there are PvP fools runnin' 'round killin' y'all, 2) we actually get into an instance dungeon (which wasn't allowed, I don't think, with your free to play account) and get to see a much larger component of the game i.e. party dynamics, puzzle-y boss fights, etc.
4) Have fun!
5) ...
6) Profit!
I have heard only amazing things about Skyrim, only amazing, fantastic, redonkulous things about Skyrim but it is a) 60 bones, and b) non-mmoat approved (massively multiplayer online action team).