Literally everything. SoD feels infinitely more like retail than it does classic or classic +. By the end of SoD they were doing Cata/Mop levels of DPS. Class identity was a mess. Healing mages and tanking warlocks were just a dumb idea.
All we wanted was them to make all specs viable by maybe adding in some tbc/wrath talents as replacement for certain junk talents and a couple abilities. Like paladin taunts for example. Then add in more raids like 40 man karazhan. Oh yeah, and we didn’t even do 40 man raids. What a joke.
What we got was retail level convoluted trash.