IMO the healing from vigor has to be reduced slightly, by 20-30% for all morphs. The heal is too strong and it's simply easy mode now, both for PvE and PvP. And I play mostly stamina chars in PvP.
Vigor is fine. Dont touch it. Yeah, it would make slightly more sense if one morph was more single target (with low aoe) and second just big aoe. But it should not be (and imo never will be) burst heal. That role should be put to some other skill that is not rally, so people arent forced to run 2H.