As for Conc Op 'temporary HP', well, its not actually temporary, once the HP has proc'd it can sit on your bar forever, I believe the idea of it being temporary was created by confusing Lifeshield and similar time based effects with it. The way I see the Conc Op HP proc is a stack DR 30/-, and I somehow get the feeling thats what the Dev's intended it as too. Having it proc a Cure Light Wounds on a melee wouldn't be all that useful, in reality, with even a half decent healer DR 30/- is still better. Of course, that's just my take on it.
Healers Bounty (
http://ddowiki.com/page/Healer%27s_Bounty), do you believe that should become a Temp HP Proc?