Ever thought about removing level requirements for uniques?

You could argue about having level requirements in general but let’s just focus on uniques.

If I would be able to equip every unique at level 1 with adjusted stats, I could maybe even get behind replaying the campaign over and over again.

Why is there a level requirements for uniques?

Totally could, but I think GGG is going for more of: these are leveling uniques, these are mid game uniques, and these are endgame uniques; And are assigned a req level based on the balance of the unique's stats.