Though, a lot of game devs actually aren't particularly good at even their own games lol, I know that's been a pretty persistent annoyance in the WoW community
yeha, that's true.
Could be that they are forcefully trying to push the play style that they want the game to be (no tanks, dodge, rotating or whatever), and it will only take a handful of players to discover the more effective play styles.
Not sure how it has worked with other MMO, but GW has a history of devs constantly nerfing play styles that have been popular among players, but didn't subscribe to the desired style of the developers. :\
I get that when gold farming and bots become a problem, of course, and exploitative farming, but nerfing certain farms (ecto several years ago; even though it was still time-consuming to farm it effectively) simply because some people really like to sit around and buy low, sell high (what is wrong with that?) or team builds and individual builds simply because they don't want you to
play that way....is a bit obnoxious.
The last issue never really bothered me that much, though. Sure, it's annoying at first that your favorite current build is suddenly useless, but there is always another one waiting in the wings to be crafted, so it does help to keep play from stagnating.