I would be that guy and have two regular-sized lightsabers with special crystals.
One contains the crystal known as the Heart of the Guardian, which gives off a yellow-orange color and can give the user unique powers depending on how the saber is used.
The second lightsaber contains the crystal known as the Mantle of the Force, which is silvery-blue. This crystal grants the user increased power when using the Force.
And if I’m a scrub and don’t get these in KOTOR, then I’ll settle for the Maulkiller preorder bonus from TFU II that had a set of silver lightsaber crystals that granted more damage dealt by all attacks.