So I pretty much regret having skipped all the blue quests, Whoever suggested only doing MSQ + Class quests did me dirty. I spent most of the afternoon going around and doing all of them to unlock various dungeons and hard modes (many of these are required for the msq) and game features. I think I got all of them but I can't be sure, there's still I guess a few greyed out options in my various Menus which tells me theres a blue or 2 hiding somewhere I haven't done to unlock that feature. I also started the relic weapon questline for warrior, i'm on the part (Zenith?) where you gotta go farm fates in 12 zones until the atma drops, interwebs says its completely RNG. I got 2 of them so far on super low level Fates right off the bat, first one I did in those zones respectively. The rest i've been farming to no avail while catching up on hunt log and GC hunt log, leveling up my GC level so I can sell all this garbage to the GC.
You know the saying "the game begins at 50" and in most MMOs people are referring to the end game loop. Dailies, raids, dungeons, whatever, "max" level content, vs leveling content. Not this game, this game literally begins at 50. everything before that is the tutorial, sitting in Durotar killing boars. it's 50 hours of that, except about 49 hours of it is teleporting around the world, walking 3 feet, clicking on npcs and watching cutscenes, with 1 hour of killing boars sprinkled across those 50 hours. To put it in perspective, if you just do the MSQ you will finish ARR and unlock the "complete eleventy billion quests" achievement X3 before you unlock the "killed 100 mobs" achievement.