I think I have played a total of two games of Secure since 3.0 hit, both 24-man. I haven't seen Slaughter pop once. The queues are ridiculous even for Seal Rock at the time of day I play (I was in a queue for 7 hours last week, even resetting from time to time, and in the end I gave up and went to bed). 72-man Seal Rock only happens at peak times, I dread to imagine how long a theoretical queue for 72-man Secure or Slaughter would be now.

I actually dislike the old modes because the level sync is so low that I have to juggle my hotbars really awkwardly when I land in them, and they don't pop often enough for me to remember and put together a proper hotbar loadout. I wish they'd do a level 60 version so it could at least be a viable alternative for Seal Rock, even if I did get a little burned out on Slaughter back in the day.