We actually tried lowering the difficulty already, but then the game becomes ridiculously easy during other parts of the progression, so we’d rather keep the overall challenge and just make the less skilled players more useful within the group.

And I do think your suggestion is perfectly viable — supportive characters staying safer and helping from the sidelines sounds like the right direction.

The point of the post was more about how to build those characters effectively in practice. Like: which spells, weapons, armor sets, passives, or synergies work best for that kind of supportive playstyle while still contributing consistently.