The biggest problem wasn't the story, the voice acting, the actual game mechanics.
Most people stopped playing because the animations and character models are horrible (which is funny because in Age of Conan MMO, characters not only look better but have vastly better animations. Why didn't they copy AoC and make the engine more modern?)
TSW has always had an outdated, nerfed game engine compared to their older MMO AoC...which again looks and performs way better. Kinda weird because its older.
If you go on reddit, most people say the game itself is good, but animation is crap. That is the #1 reason I see why most people don't like TSW. They aren't fixing that because it would need a complete remake of the game.
And that is why I stopped playing, because the characters and animations are so damn ugly. I went to AoC, and it was way better despite being older.
Sadly, TSW Legends is NOT going to see them success. Not only is the game getting an NGE that is even worse (or at very least, just as bad) than what Lucas Arts did to SWG. But they aren't fixing the #1 and #2 problems people quit (again, go on reddit and the vast majority quit because...) character models and animations. And they can't fix that without remaking the game in a better engine like AoC used. Or if it is the same engine, that is really sad and even worse, because I got on AoC the other day and it still looked better (not just graphics/art style, but animations and movement, especially combat wise) than TSW lol.