Not missing at all > Badges and justice points. Hated farming them for days on end, just because it was the quickest way to get gear on alts. Also having faction exclusive classes like the paladin and shaman was kind of bullshit. Having tactics which require one or the other really messed up my raiding days.the
Missing > Old talent system, loved having a lot of talent points, gave bigger opportunity of some fun comboes. Also miss the larger amount of content patches, it was pretty much the major reason for me loving TBC so much, because there were so many new things in the entire expansion. Quickfire round! Miss having a lot of daily quests, miss the class diversity of having to need specific classes for fights, miss the small games like the treasure run and Ogrila demongate game and finally, most of all, i miss the hardmodes of Ulduar. Would have loved to see that mechanic be used in another full raid.