Of course the in-game community is dead and its a massive problem and torghast is bad and the maw zone is terrible. Let's set those aside. Other issues to me.
1. World Quests got completely destroyed. People whined about them were they were perfectly fine and now they are ruined.
2. Lots of mogs but almost ALL of them are ugly which kills the desire to collect them. I think every single mog set locked behind covenant rep is ugly.
3. badge bookkeeping 1000% sucks compared to WF/TF. Another step backwards.
4. raid settings are getting extremely repetitive with almost every single one of them in dark, dank caves or antiseptic buildings. We need more varied raid settings. On a beach, on a snow capped mountain or snowy woods, forests, etc.
5. almost all of the characters in SL are constipated and wooden. I don't care about the first ones. I don't care about Zovaal. They spew out these bland, boring slow-witted diatribes that put me to sleep. Its a complete disaster. They are as horribly written and acted like characters from the Star Wars prequels. Characters like Baine, Anduin, the Winter Queen, Zovaal, the Primus all fit right in with Qui-Gon, Anakin, Padme, etc. Even Sire Denathrius is more about just spewing boring diatribes out his mouth than anything (I don't know why they praise him).
6. Looks like they will throw away KelThuzad as a minor miniboss instead of actually doing something with the buildup he's had over the years. Another waste. That's a billboard advertisement to not get invested into the new characters in SL.