Dex for AP regenerated per turn
I have to say I'm not a fan of that idea, as it basically screws over all the builds that aren't interested in Dexterity. Melee characters in particular need to move from opponent to opponent to attack and lacking the extra action points earned from Constitution would really hurt.
Constitution is fairly universal - unless you're aiming to be built out of glass, everyone dips into this stat (which may be why it's linked to AP).
