"(...) we accidentally set up a variable for romance when there were no triggers for it, because romance is the default (...)"
Oh man. That's what I was wondering while playing!
Somehow Silas seemed lonely but very tentative about socializing, and it felt like whenever the MC reacted negatively or with distrust, that enforced his own more and more until he was basically emulating a toaster.
No surprise that the 'normal' (well, I'd rather say 'paranoid') route was dull. Since the MC expected him to be dull and anything else would have freaked her out...tthe droid would have have to be suicidal to still come out and show anything resembling a sense of will in these conditions!
Thought I admit it might have been interesting to see Silas call her on her bullsh*; or try to get rid of her sooner, as he'd care less ans less for her comfort along the length of the game.