Is the device Saw wants them to use purposely over-complicated or is there some reason I missed, like what are the configurations for?
There’s a little more about the device (and the highly volatile fuel ‘rhydonium’) here, mate:-
& www.slashfilm.com/1844788/andor-season-2-starship-fuel-rhydonium-explained
I took it as the device being an old, complex and dangerous way of allowing fuel for engines or machinery to be used in certain areas and environments of the galaxy. Differing planets or systems requiring differing mixes or combinations / configurations of fuel purities to work… or for it not become unstable… and then exploding (which is why the other engineer claimed it would be a lot easier if they knew where they were going - as it would mean far fewer configurations to remember / less chance of making a mistake and blowing up).
Though I’m probably wrong on that.
For those that enjoyed the music in Season 2 of Andor - Episodes 4-6…
Andor: Season 2 - Vol. 2 (Episodes 4-6) (Original Score) - 24 tracks by Brandon Roberts & Nicholas Britell
www.youtube.com/playlist?list=OLAK5uy_kumiZii4yZwzKmPeayRe4WFmS127jPM_o