To be honnest you just brought back memories to me.
I played World of warcraft for almost 10 years.
Played Classic , TBC , WOTLK, Cataclysm and few months on the Gul'dan patch.
But Wrath of the lich king was the best time to play wow. That was the time that you could play any race / any class and enjoy the game on everything.
I played as a Frost mage on PVP and Fire Mage on PVE and you Just made me download WOTLK.