Which kinda proves the point that people that are currently playing it aren't long time Hunter mains.
Survival is being played as fun/alt spec at most.
Survival is also competing with Demon Hunters, which obviously attracted a lot of attention at expansion start.
Long-time hunter mains are playing MM and BM in raids. Most people that are playing SV are not playing it to be competitive in raids, and therefore I conclude its a failure.