I'm definitely still plugging away at the game, since it turned out unexpectedly fun and I feel like it still has a lot of potential as a game with just a little more stuff added. I was thinking you'd search the alien computers for references to other places to raid, but I also kind of like your fuel idea-- I already kind of have fuel represented in the game, since you may have noticed that your debt jumps up a couple hundred bucks every time you fly to a new location, so it wouldn't be out of the way to add an explicit fuel collection minigame.
I'll probably release updates separately from this version, though-- I prefer to keep the 7DRL version as-is, aside from fixes for actual game-breaking bugs that crop up (like the crash bug I fixed already, or the one that made it impossible to win because I flipped a greater-than sign). As for the updated version, I'll probably want to publish it through my own site, anyway, for functionality's sake-- the current version attempts to post your scores to my scoreboard server, for example, but running within itch.io's ssl page means that the browser sees the submission as an XSS attack and prohibits it. (There went an hour or two of the jam spent writing the scoreboard server, too.) When I do release a version with new content and balance fixes and the like, I'll make sure to put a link to it on the main game page.