Vampiric Bond is broken. It has no minimum Bond requirement and it doesn't apply melee power as advertised. Also, at Bond 120 (which I think was the old bond value?) a second vampiric bond (lol?) comes into play, meaning that if you have 0 temp HP, you get 40 temp HP with 2 hits. If the first 20 hit points are not expended, only one of the bonds refreshes its timer in the 9 seconds.

Other than that, (I have a mostly occult slayer) that healing is certainly more than enough if the monsters are not hitting you with large chunks of damage. You can keep battling and healing through most trash without outside help.