The healing received from Second Wind is just too much. I mean seriously, 11k ticks PER SECOND? That means I have to do above 11k sustained DPS to bring a Warrior down. That is also through multiple defensives, a HEALER that heals him, him equipping a shield and getting a tonfuck of more physical damage reduction, and of course basic stuff like line of sighting which, if properly done, reduces damage taken by up to 100%.
The healing is too strong. I'm not saying nerf it per se, but at least fix it. It shouldn't be too hard, right?
For example, just reduce the healing done to 2%. Also make it get hit by the 30% healing reduction in PvP (just like every other class has to suffer from it). To balance it out, make it so that it heals when the Warrior is below 75% instead. You'll still get a steady 5k per second heal, but it won't be so broken that certain classes can't kill you whatsoever unless they line up their offensive cooldowns altogether.
I'm a Feral player myself. I've seen enough Warriors live through my sustained damage (rape, rip and shreds).
Oh, and just to defend myself here: Nerf the %heal of leader of the pack while you're at it. Slap the PvP healing reduction on it, and increase the ICD by 2 or 3 seconds. Currently, Leader of the Pack heals me for, roughly, 0,66% max health per second. Reducing it a little is still okay for sustained healing, but just less damn bursty.
Keep Recuperate as it is. Rogues are in a bad spot. Though they can perform well if played correctly, Recuperate is mandatory for a Rogue's survivability for a few seasons now. As much as it heals, it definitely doesn't make Rogues overpowered. Plus, it costs combo points.