Did a quick search for a topic similar to this but found nothing...
If you could take a gameplay aspect from each expansion (and Vanilla) of WoW, and put it in current game, which would you choose? I'm not talking like "Make MoP entirely like BC", just one thing from each version of wow, such as maybe...the way Arenas were back in BC, or something similar.
My thoughts on this are;
Vanilla - Class Quests, I haven't seen much as far as hatred toward these and a lot of people seem to wish to have them back
BC - Using various non tank classes in "tankish" type roles (i.e. Mage tank for Maul'gar, Warlock tank for Leo the Blind)
Wrath - Ulduar version hard modes, where you have to trigger something DURING the boss encounter, versus a toggle beforehand
Cata - The difficulty of the initial heroics, they weren't something you could just push through and know you could defeat, even with semi-decent heroic and low end raid gear.
Any other thoughts on what you would bring to current day WoW from previous expacs?