The Chosen Ones

That need some common sense.

Blunt-75% to medium . 100% to heavy . 125% to light , 5% to divine
Slashing-125% to medium, 75% to heavy 100%  to light , 5% to divine
Magical-100% to medium , 125% to heavy 75% to light , 5% to divine
Chaos-100% to all armor types
Spells-100% to medium , 105% to heavy , 95% to light , 80% to divine and bonuses depending on the specified element.

Medium-75% from blunt , 125% from slashing , 100% from magical , 100% from chaos
Heavy-100% from blunt , 75% from slashing , 125% from magical , 100% from chaos
Light-125% from blunt , 100% from slashing , 75% from magical , 100% from chaos
Divine-5% from blunt , slashing , magical.150% from chaos

This part: You see what I mean? A complete nerf for physical classes, there should not be such a thing like divine armor, maybe "Dragonscale" which takes lower damage from all attack types, but making it lower than 50% why? Just make the boss have more HP.
This one: I would swap those, a Slash deals more damage to light armors while blunt could get more benefit from breaking through a medium armor.

Fire-10% bonus against heavy , 20% bonus against medium , 30% bonus against light
Ice-20% bonus against heavy , 30% bonus against medium , 10% bonus against light
Lightning-30% bonus against heavy , 10% bonus against medium , 20% bonus against light
Darkness-50% bonus against heavy , 0% bonus against medium ,15% bonus against light
Holy- 25% bonus against heavy , 0% bonus against medium ,50% bonus against light
Arcane(non elemental)-0% bonus against heavy , medium , light , 60% bonus against divine

Just pair of things here, like
 - Lightning should have bonus against medium and weak to light.
 - Ice bonus for light and weak to heavy.
 - Fire bonus to heavy and weak to medium.
 - Arcane no bonus and no weakness.

For darkness and holy can't say, every gamer has a different thinking about those and last word is for Aero, but let me give sense to what I said. Think about what those armors are, Light is Cloth, the prefered by mages for mobility, which doesn't keep them warm enough and can't hold a sharpened shard of ice, but it hasn't been invented yet a Cloth that helps electricity. Medium armor should be the kind of Leather which makes semi-conductor while is fire-proof. Heavy is the kind of Scales and Plates, think about a reptile, they have cold-blood they can live in any cold place but if you wear any kind of metal, you will LOVE to have a drink after getting out of an over-heated heavy junk.

Sounds good?

Overall good work .