I doubt that.
My impression is that the numbers of Rets have fallen off sharply over the past few months. That may be due to the servers I play on, and it may be wrong, but most Rets don't seem to have survived the transition from LK.
At least, not yet - theres still time for the S11 and t13 armors to bring them back
As it is....my own feeling is that Blizzard really needs to grap this nettle, sit down and simply get the class system right. HP was a start, but being as poorly implemented as it is, it almost feels like a chore to play rather than fun. This bonus feels like an experiment to see how well a faster HP generation rate will work and, if so, hopefully, it'll be expanded upon.
Hopefully, Blizzard won't see it as doing the job all by itself. HP is in greater need of more than simply an extra HP every so often.
EJL