Lets assume, as with every new expansion, everyone likes the new content- new quests, new scenery, new characters, instances, mounts, new levels to achieve- no need to mention that everyone likes new stuff. But was it enough?
Zones- On par with prev. expacs, good exploring, treasures, rares, good times.
But instances... only 8?!!(one is a recycled vanilla). BC had, what 16 and WotLK had like 12? Plus raids a plenty. I mean c'mon, give me a reason to play with people and gear up. I started mid Cata you had to run instances, with people, to get gear, or points to 'fill those last stubborn slots' I think that worked great. It forced you to play for rewards. Now you just can just buy gear for gold.
PVP- Lots of discussion on this. It's definitely broken. I've only done Ashran once, and like 1 random BGs since WoD dropped. I'm a DK PVE tank and DPS, and PVP in spare time so I need 3 sets of gear on hand, at all times. I worked hard for a full set of epic PVP gear by the time cata ended and BGs are fun holding my own. Continued 3 sets of gear in MoP- it felt I had less time but I still managed full epic set. Granted, end game/last patches gave me time to grind the final parts. But right now, I only have 1 set- DPS, and zero PvP pieces, feel like I have no time to spend resources on PvP set. And I'm horde, so yes the queses are fast but whats the point when you lose every time? Sure you could grind points, but the moral sting of loss after lose after loss. It's just not fun anymore.
Professions- One of my favorite spare-time, past-times in wow, now restricted to Garrison and auction house. Remember when you needed to find an alchemist to transmute something for you? Or wanted trade/buy ore/herbs/leather? Trade chat- "Blacksmith looking for work [Blacksmithing]" It really was your "job" in WoW, how most people made most their money. You would spend a whole day focusing on you job to level it or make some money. Now most people have AH add-ons to make gold up the wazoo and you've got a garrison for every material you need, there's so no need to interact or 'Work for a living'. Don't get me wrong, it's terribly convenient, but at what cost.
Anyways thanks for reading, share your rant/stories/thoughts; maybe blizz with read our stuff and take into consideration for next expansion.