I've never really understood why your strength bonus gets included into a lightsaber's damage in the first place. Higher strength lets you swing a physical weapon harder and faster, meaning more kinetic energy, resulting in more impact when it connects. A lightsaber, being composed of energy, should theoretically be very close to weightless (except for the hilt). Any increase to kinetic energy from swinging it harder would be negligible due to it's lack of mass. Besides, the damage is energy based and not physical. If anything, your Dex bonus should be added to the damage due to well placed strikes (though that's a bit of a stretch in and of itself).
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