That's fair, it honestly is tough without just assigning a bunch of homework, like particular tracks that were reference points, but outside of that my process is more bottom up, like I would create a track, maybe halfway through decide on how I want it to feel in a game, and then kinda steer the ship that way.
Yea they're def a bit long haha! Most of my experience with korg gadget has been making house-ish tracks, so I kinda fell into that mode to get some good variations and everything got real long. Nothing looped perfectly except for the bossa nova track though!