ok I was readying about the new werewolves and a monks ability to evade being useless. I agree. Why not have armor types produce negative evasion modifiers. everyone knows Heavy armor is bulky and somewhat difficult to be agile in. A person in armor gains the benefit of absorbing some damage but being hit more often as they can't dodge as well as someone unarmored.
So even if you multi classed Monk to 100 if you wear armor your evasion would go way down basically negating the benefit of training monk. But if you wear lighter or no armor then hey.
Would also give people a reason to use lighter Armors.
P.S. Just a thought but could also make ethereal or magical armors made of Plate that were less bulky (less negatives on evasion) allowing for special techs to be added to armor types.