Yeah the Saw fuel heist thing went nowhere, beyond filling in his change in personality from prequel era to Rogue One. I thought the stolen gas would appear later somewhere.

Bix ending was fine though she could have been used more earlier, however the PTSD and drug use was obviously no go, removing herself from the equation makes some sense. Not sure about being on that same farm planet was a good idea though.

Lonni and the other guy plot was just there to lead into Bix being taken on the revenge mission; he used the guy to get info for Luthen. Somehow he never got caught afterwards and the ISB didn’t think it was suspicious.