Have the ability to add skins to the helms, as a padding of sorts, with different bonuses available. As it stands now, anyone with a scroll of mage armour, or a brooch of shielding has no use for a helm, at all and is better off using a helm of the bat, etc, etc. Also the ability to enchant helmets, to act like armour when it has padding, and add to the Universal saves, even if it's just a +1 bonus.
