GeneralGrundmann wrote: »I understand the point perfectly.
It's just the case that I am, personal opinion, very fine with the fact that these skills get worse with increased difficulty.
One way of raising the floor without touching the ceiling would be to add a clause to those abilities, where healing would default to a minimal value if damage is being mitigated too much. E.g., restores X % of the damage done, but at least Y. There are enough reference abilities to determine sensible minima based on the respective player stats.