Slower, more deliberate gameplay isn't "shitty gameplay". The gameplay you're talking about is more suited for the singleplayer experience or the multiplayer "set match" experience. Twitchy, fast paced combat isn't suitable for the MMORPG experience, where this type of gameplay conflicts with the social experience which should always be put front an center. As the other poster pointed out, they were able to take down endgame bosses in the current iteration of WoW without need for communication which is a *problem* for any game calling itself "MMO".
If what you want is an adrenaline pumping, super-fast, twitchy experience, I'd never recommend Chess to you because that's not the experience you're going to get from Chess and, at the same time, even the most fast-paced MMO "action combat" system is going to be wholly inferior to singleplayer and set match multiplayer games. And you're not there for the MMO experience anyway, so why bother? Play the better game, the one that suits your tastes.