As I was looking through the NWN manual a 10th level Palemaster should receive the feat of Deathless Mastery, making them immune to critical hits. Since Layonara is not set to Hardcore, this feat is quite useless. I would like to suggest that they receive a reduced version of Damage Reduction, say 1/- or 2/- to offset the imbalance.
Is this possible? I don't feel it would adversely unbalance the game.