Locking GL Kenobi behind a TB mission that requires your guild mates to be able to do it is completely unfair and unreasonable. If you're in a guild that you really enjoy but it can't or is barely abl...
It's fine. CG have to continously keep reinventing the wheel to give established players a reason to keep playing. If anything, including heroes like KAM, Wat makes it less of a cash grab.
Logically, KAM would be a requirement for any dark side Galactic Republic Galactic Legend, antagonist to Master Kenobi or otherwise, particularly if it's Order 66 related.