Since I've reached the point where I'm feeling less motivation to log on, I thought I'd post my assessment of the expansion so far from a very casual point of view (someone in a dead guild who doesn't raid or do mythics, only engaging in the most basic aspects the game has to offer).
Some stuff in Legion has been great, addressing some big issues from WoD. Mainly I'm talking about World Quests. I consider World Quests a very successful addition to the game, giving people like me something to log on and do once reaching cap for some tangible rewards. The World Quests range from fun to forgettable, but they are usually quick affairs so it never feels like they overstay their welcome and the rewards mostly always hit the worthwhile range. The % to completion ones are a bit in a weird spot, because while the WQ variant completes pretty quickly (something like 6% to 8% per kill, with some exception like the falcosaurs ones), the introductory ones done when leveling up complete at such a slow pace (2% per kill or something) I do wonder if two different devs implemented them.
Class Halls are a bit of a fail as far as I'm concerned. Some of them look cool, some of them look lame but all of them are a waste of time to navigate for one reason or another. The Hunter Class Hall, which is one of the lamest imo, is compact enough to get in and out when it's time to check follower missions or interact with the artifact forge but then you gotta navigate all around if you have to pick the artifact knowledge item or get the expendable followers or do Class Hall research. Still it's no Warlock Class Hall, which is tied with the Demon Hunter's one as the worst one to get in and out of for me. So much time wasted that at some point I'd prefer a simple menu to select things.
Cutting back on the number of followers and making expendable ones has been a great idea to avoid the problems of WoD, but then, even with less followers, they stuck with limits on how many you can have. Why? If you want us to only have 5, then only make 5. Don't make 7. Don't force me to remove followers if I want to keep sending them on missions while at the same time asking me a fee to get them back.
Artifacts are a cool concept but the implementation feels a bit of a miss to me.
First, the color variants being unlocks. I'm of the idea the unlocks should be new aspects only, not color variants. It's one thing to repeat the same tasks on different characters to unlock new, cooler aspects, it's another to repeat doing 200 WQ, killing 1000 players or doing 100 dungeons to unlock some color swap.
Then there is the Artifact Power issue. They wanted to gate artifact power gains so people couldn't max their artifact right away, which is understandable, but then they made it feel so grindy and a chore that I reached a point where I didn't feel like doing the AP World Quests on my alt because the gains are too little compared to how much AP is needed to reach the next level all because Artifact Knowledge isn't high enough. Doing a dungeon and getting... 1200-1300? AP items from bosses at AK 16 feels offputting when I need 200k+.
Having to wait for level 110 to start researching Artifact Knowledge is fine on the first character to reach cap, but on alts it feels tedious.
The 10/15/20 AP items feels useless even when starting out with your artifact at level 1.
When it comes to artifact power and the unlock of traits I feel like they forgot to ask themselves is this fun?, but that's just me.
Legendaries in Legion are a total miss. From how you obtain them, to how some are good and some suck and it's all blind luck if you'll get one and if it'll do something for your character or if an item 60ilvls lower is gonna be better because of secondaries distribution.
I'm not sure what they were thinking here. If they wanted to do it like D3, then these legendaries should have been dropping quite more often and not just from some activity but even by killing a bunny.
Did I like having to grab all those pages for Khadgar just to burn them in WoD? Nope, but at least there was a bit of a story to getting a Legendary in the past. In Legion, I just keep hoping my emissary cache will give me one instead of the usual useless 835ilvl item and that's that. The only story attached to these legendaries is the blurb in their description.
I thoroughly dislike what they did to Professions. The rank stuff is a complete miss. It doesn't improve the items you make, it simply removes materials, some of which should have never been in the recipe at all. Then there are quests which reward the same rank the vendor in Dalaran gave you for 25 gold.
For gathering professions it's even worse. I've played two character up to 110, both are miners. Only one of them has a rank 3, for Leystone Deposits. I kept mining, and mining, and mining but rank 3 never pops. Before it popped for Leystone Deposit on my Paladin I started to wonder if it was bugged because at that point I had 2k ores gathered, mining any nodes I came upon while doing my WQs.
This whole randomness isn't really all that engaging or fun. I'm not sure what they were going for here, but it's kind of useless to put 6 different kind of mining for only 2 types of ores and then making it ranked.
I thought professions in WoD sucked and yet with Legion they made me miss it.
Well, at least they didn't make craftable stuff you could only wear 3 of. I guess that's an improvement.
All in all, I have enjoyed Legion more at cap compared to WoD, but I had more fun reaching cap in WoD (though Mists of Pandaria is still the best expansion as far as I'm concerned).
More NPCs I liked in WoD compared to Legion (like Kaz the Shrieker, I loved her craziness), plus most of Legion's cutscenes lack direction for my taste, making the voyage from 100 to 110 not as rewarding. The only really good one has been the Horde one at the end of Broken Isle, when Sylvanas gets nominated Warchief (and not just because I like Sylvanas but because it felt better directed and focused to me) and that was before Legion officially released.
One example of what I didn't like, the Val'sharah stuff. Malfurion turning in a pidgeon and flying off, with no one saying anything until he's gone, then Ysera comments on how he stormed off and we should follow him because he's in danger... then why the hell no one stopped him or tried to?
The whole corruption of Ysera also felt lackluster. She can feel the corruption but she couldn't feel or see that corruption shard being thrown at her. Man, if only Deathwing knew how easy it was to corrupt the other aspects, just throw a red shard at them and voila.