Dragonsfire trap was turning out to be our only hard CC that wouldn't break from damage. It was broken in that it wasn't trinketable, didn't DR and would interrupt non-interruptable (bladestorm, etc) abilities on the alpha.
So instead of fixing those bugs and testing it out when working correctly, they completely remove the CC aspect of it in favor of a 20% slow. So the most CC we can possibly get as survival, through talents, is a trap that roots someone OR Freezing Trap, a trap that slows people by 20%, or Tar Trap (another slow). Sticky grenade doesn't CC currently -- not sure if it is supposed to -- it rather just makes their character jump, sort of.
I cant' dig for it right now, but there was a blue post/tweet/or blizzcon question where the developer said that survival wouldn't be getting more defensive abilities than other hunters in trade for being a melee spec, but they would have "a lot" of CC.
I get that a 15 second CD (with talents) 7 second "stun" would be OP, even with it being a "skillshot", but I really, really hope they either make it viable... because as it stands right now, every single melee spec has better survivability and more CC than us (even enhance has a displacement effect and a targeted stun in their talent tree!)
/rant