standalone sounds like something you should do, tutorial or not!
one more thing: if i remember correctly you voice acted the ships computer and the player character both yourself, didn't you? now, since the board computer is, well, a computer - and be it a advanced one, i think TTS voice-acting wouldn't be too unfitting for him, even by higher standards -> give me a word if you want me to provide you some TTS voice acting for him
thinking of it, now that people know how cool this campaign is, maybe they would be more willing to contribute than the first time you tried, if you'd ask for some voice actors again
this campaign/mod is worth it