Things I miss about TBC: heroic Shattered Halls pre-nerf, IQD on PvP servers, every raid except Karazhan.
Things I don't miss about TBC: Karazhan, mace stun, resto druids, HARP, dreamstate resto druids, SL/SL, drain teams, paladins that tried to tank before prot was good, Netherwing dailies, Karazhan.