I would say bonuses from focus and specialization counts, but expertise and power attack are out because they are "special" attacks also. Dodge is, however, not tied to your weapon so that should still work.
Remember, if you have a Feat or Special Ability that you have to choose to use to change your attack, then that won't work with the maneuvers in ToB. Anything that is passive however, or does not depend on the attack/weapon, is fine. Essentially you're choosing a Diamond Nightmare Blade vs Expertise attack or Power Attack.
Hope that helps
