Quote from Walt_Disney_II
what about if you are in a house?
The same thing as if you're in a house now: nothing. Even with these changes, mobs would still need to get line of sight on you in order to start chasing you, so if you're behind a wall or over the crest of a hill it wouldn't matter what kind of armor you're wearing, because they can't see you. I'm going to try to edit the OP to make it more clear when I get the chance.