I cant speak about older editions but was interested with the idea of some armors being better or being less effective against certain weapons.
Something to differientate armor and weapons more. I feels advanced martial combat rules is missing from 5e. They spent how many pages on spells....sorry of topic...

BG3 Modder: https://www.nexusmods.com/baldursgate3/users/55895062?tab=user+files