I wouldn’t mind the option of using any weight type, but I think there might need to be some sort of limitation in the game just to keep it a little more interesting. Maybe the ability to equip heavier armor classes could be a level perk, and the melee classes reach it a little faster due to their higher number of close-quarter encounters preparing them for the extra weight.
As I said in the Feedback on Combat thread, I’m hoping that there’s lots of perks and characteristics attached to weapon and armor classes for greater diversity in gameplay. Otherwise, everyone will just push straight to whatever has the highest damage output or resistance to attacks. I’m starting to see this with the weapon choices the blacksmith currently has; Unless I’ve only found copper and tin and no iron, I don’t even bother with bronze equipment.