I've had an idea in my head for a while and I would like to get it down in writing, why not do it here? I thought. That way I can get some feedback on it too.
The gist of the idea is that I think using Mechanics on a Kyber crystal to install optional modifications doesn't really represent what happens when a character bonds with their Kyber crystal such as Kanan told Sabine in Star Wars Rebels. There is also currently no lack of connection for when a Dark Side Force User picks up a lightsaber that hasn't been bled.
With that I have a house-rule I am considering trying out. You will find it below.
When modifying a lightsaber crystal attachment, the owner does not need to spend any credits and rolls a Discipline check instead of a Mechanics check, following the normal modification rules beyond that. This is to represent the user's connection to the crystal through the Force; when the connection grows, so does the effectiveness of the Kyber crystal.
When anyone other than the owner of the lightsaber attempts to use it, the crystal stats are from its unmodified state, to represent the lack of connection to that person.
If the owner of the lightsaber becomes a Dark Side Force User, the crystal stats are from its unmodified state until the owner either bleeds the crystal or becomes a Light Side Force User once more.
If a character starts the game as a Dark Side Force User and are using the Knight-Level Play rules, they may start with an already bled lightsaber crystal attachment in their lightsaber.
Edited by GroggyGolem