Well, my results are pretty skewed because I was fighting freakshow/warhulk or freakshow/crey whatever (I love freakshow. They're so wimpy.

) combos in Crey's Folly, but...
I got CoH right after Issue 5. I've adjusted pretty well to issue 6, I think. Spines/regen scrapper, I could pretty easily solo groups of 2 +3 bosses. It took for FREAKING EVER, and I would eat up all the insps that their minions dropped, but I could do it. I even did several +5 warhulks. One at a time, with DP and IH up, but I did it. Gave more XP then the "Kill x whatever" mish I was on when I was fighting them.
Honestly, if this is "nerfed" regen, I'm really, really, REALLY scared of the power of an un-nerfed regen.