This heal is incredibly weak compared to other self heals and a big trade off when you look at the finishers that mut and sub rogues juggle in PvP. (Envenom/rupture/SnD/KS) (Eviscerate/rupture/SnD/KS).
Using a recup means you will lose something important, and it's unfortunate that the only actual heal in the rogue arsenal is so weak that it's hardly worth it. I really think we need to rework recup so it's still an effective cost-benefit versus your damage and/or utility, but without being so useless.
Some scattered ideas/thoughts:
Glyph to reduce healing but make the healing instant
Increase all healing recieved by 20% while active
make it a talent along side leeching, change it to a self heal that costs energy.
remove recuperate, buff leeching, change that tier to have self heals.
Any other thoughts?