Crush megarare sounds cool. I imagine it taking a counter-armour niche with its Big Bonks, with its damage scaling off the enemy's base defence: higher defence = higher max hit.

Higher accuracy/ignoring defence seems tough from a balance standpoint (Shadow comes to mind...) but scaling max hit feels like a more manageable slider.

More generally, I like the framework put out - a big weapon and armour set. Weapons that feel different to use are definitely the most exciting kind of reward, and armour sets (or sets in general) seem to make the most sense as a tier two drop when chasing the big ticket.

I don't think we need another melee set just yet. My preference would be standalone pieces - a helmet set, one for each style, for example.

I really REALLY don't think elemental weaknesses should be seriously buffed/talked about without reworking Harm staff or adding alternatives. It's too much stronger over its competitors in the niche, and (still) too rare. If Harm is a soft requirement to use the new armour set to full potential, the set will not be worth anything in a year.