I'm more focused on the aspects of H.I.V.E.'s ability, I think it could be more balanced if her ability added a new mechanic to the game. One of the common characteristic among characters is that each ability has their own set of mechanics and these mechanics allow them to traverse, fight and disengage in ways that basic actions can't. Not just any character can do what each of the raider's abilities can, except maybe H.I.V.E.. Her ability is health regeneration, it's pretty straight forward and their isn't much strategy using it beyond timing. Meanwhile, abilities like Konstantine's repulsion sphere can broken down to a push effect, the catch is the repulsion sphere is an AOE that lasts a duration, continuing to push enemies away and it can be moved when firing at it's core
When you break down all abilities, they all have a simple purpose, but how they work is what makes them strategic, and for some like Ginebra, using your ability improperly can mean easily getting defeated.
To summarize, H.I.V.E.'s ability isn't versatile enough.