4pc set bonus resurgence no longer has a cd. or you could go with roaming mend can travel an additional 2 times making it 6 targets healed.
another idea:
2pc: 15% chance to cast a separate non force bend roaming mend after a direct heal ( wouldn't proc off resurgence hots or revivication)
4pc: resurgence has no cd
6pc: reduce innervate cd by 1.5 secs
if u made innervate cd baseline could replace 6 pc with additional charges on mend