You know, I read these comments and the pattern I see here is everybody saying "Oh this is a great idea for a game...but 'cause it's an MMO, I hate it!"
If you don't like MMO's, that's fine. But seriously, this attitude that the genre is something that will kill any game concept, no matter how great, is getting stupid. A number of the common problems with MMO's can be blamed not on game mechanics, but on players; people destroying the sense of immersion and enjoyment of the game's content through behavior like teabagging, stripping their characters down to their underwear, spamming the chat channels with garbage, etc.
When the complaints are related to game mechanics, a number of the more common ones I've heard regarding the MMO-du-jour aren't about broken or bugged programs or AI, but more about how cookie cutter the mechanics get. Stationary NPC's handing out your typical kill-ten-rats style missions, combat based around you and a monster standing in place and taking turns wacking each other while waiting for special attack cooldowns to end, repetitive grind of the same activities just to build up reputation with factions are among the most common.
From the accounts I've read (I could be mistaken but it's what I heard), Secret World has avoided a number of the bog-standard-mechanics problems with active combat, skill sets based on equipment instead of class and mission structures that have you actually investigate rather than just follow a pointer on your HUD. For the issues with player behavior, that can't be blamed immediately on the game itself and the solution isn't found in the game, but in the players and the support given by its parent company. Players need to police their own communities and report violations of in-game behavior rules, while the parent company needs to enforce those rules, issuing warnings to people who commit minor violations, suspending people who commit serious violations and banning repeat offenders.
So frankly, I think immediately saying Secret World sucks just because it's an MMO is seriously jumping the gun. The game isn't even a half-year old yet; let's give it some time before calling it a lemon.