GreatLemur said:...but I really don't know about the balance implications of these numbers.
Good point. I should have mentioned that this would probably have to be paired with some kind of class-based dodge bonus progression, such as the scheme presented in Unearthed Arcana. (I'm not totally comfortable with that system, though. Making the most heavily-armored classes the best at dodging doesn't sit well with me. Really, it ought to be the Dex monkeys who avoid blows all together, while the tanks get clanged. But Fighters, Paladins, Clerics, and other heavy-armor wearers should still be able to take the most heat.)AE020704 said:I think, for balance reasons, as long as you stick to a rough guideline based on the existing AC of the various armours you shouldn't really have too much of a balance issue. Any houseruling regarding beating Touch AC is really going to favour the skill-monkies with their high DEX, though.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.