Anyhow - Armor vs. Weapons - A little notion popped into my head earlier today about armor and weapons, so I figured I'd throw it into this post as well. Armor at one point was sometimes classified as "proof" against a weapon - usually firearms. This made me think that, assuming you use variable weapon damage, you could classify armor as proof against a damage dice, such that weapons using that dice or smaller would suffer a penalty to hit someone in that armor. So, for example:
Platemail is proof against 1d6
Chainmail is proof against 1d4
Leather is proof against nothing
Thus, attacking a platemail armored knight with a short sword or hand axe or dagger is done at a -1 penalty. Likewise, attacking a man in chainmail with a dagger or club. Obviously, you could alter the specifics as you like. Or perhaps in place of a penalty, you allow those weapons to do but minimum damage (i.e. 1 point plus strength bonus). This could also allow you to reduce the armor modifier for plate, chain and leather and boost the bonus for using a shield. Maybe change the modifier for leather/chain/plate to +1/+2/+3, while shields grants a +3 bonus to AC.