I vaguely remember of barely needing any sort of shield, heals, or mits from our own kits with any of 4 healers when soloing because Variant Spirit Dart that melts trash pulls & helps with boss dps, and Variant Rampart that trivializes a lot incoming damages with ridiculously low cooldown. Heals are mostly coincidental from things like Assize, Star, Pneuma, or from weaving one or two of many of our overabundant free healing tool.