Excellent point. I'm still confused why armor/weapon degradation was taken out of the game. There's no reason it couldn't have been part of the Smithing skill, and it could have thrown a little variety into the frighteningly dull Smithing perk tree.
IIRC, it was taken out because it was a real hassle to deal with due to the rate at which said wear occurred. While I don't particularly miss it I do agree that an improved version could have been worked into the Smithing skill, however that runs the risk of making Smithing a bit
too important, much like how Armorer was in previous games (that it was also tied to Endurance, which was vital to raise early on, didn't help either).
Also, creating a perk that completely eliminates the weight of heavy armor is arguably the stupidest decision Bethesda has ever made. It really does bring it down to a matter of cosmetics, which is a shame.
Yeah, I can't figure out how they thought that was a good move either, as anyone with more than three functional brain cells would realize that no matter how skilled you are at moving around in it, a set of plate mail still has a significant amount of weight and it's still going to hinder you a bit when you do so. The perk's effects do make sense, as part of RL plate armor design theory holds that the wearer has to be able to move well on the battlefield (this theory is part of modern ballistic vest designs, by the way), however the perk itself should have been left out as part of the Heavy/Light dichotomy.