Some of the animations go back to 2005. Playing a lock makes one feel detached from the environment. When playing along side a priest or shaman it doesn't even feel like you belong in the same game. Some classes have already received two rounds of updates, while locks have not even received the first.
Another pet peeve is locks are still using the same model of minions they have from vanilla. Even Demo specced you have to purchase glyphs to get the models back that you had previously. What is disconcerting is that these very same minions you are using saw their models updated in legion and also in WOD. Would it have been so terrible to throw locks a bone and let them use these new appearances ? Or do something useful with enslave demon to get a different look.
I know exactly what is going to happen though. After getting the middle index finger for all legion, locks will be told they will be getting everything their hearts desire in the next expansion and of course everyone will run out to buy it.