WildStar could have had it all if it wasn't for the insane belief that WoW was "not hardcore enough", or more specifically, "WoW should be more like it was in TBC" (particularly insane in 2014!). They literally set it up so that, in order to raid with a guild, you had to spend about 2-3 months grinding the endgame hardcore. This was demented because they didn't factor in that players often drop out due to RL issues, new games coming out, going back to other games, and so on, so they created an essentially nearly-impenetrable wall by mirroring and then wildly exaggerating TBC's endgame design. This meant they had a big and solid-looking initial population, but the attrition was horrific, and people just didn't want to grind for literally months just to be "allowed" to play with their friends.
Kind of the opposite to GW2, which set things up so the endgame was very easy to enter and very casual, and then GW2's own playerbase decided to become the world's biggest elitist wankers, and make endgame opportunities very hard to find and the endgame increasingly exclusionary (which had got pretty bad even within two years of release). Sometimes you just can't win, I guess! At least GW2 is still with us, though I'd kill for a GW3 which returned to GW1-style gameplay.