That... sounds about right? Iirc the first dev was in the process of rejiggering things on that front when life/lack of interest/other projects sideswiped Inc itself.
That said, at least some of the code I saw (during development, back before the source went out) didn't look that bad, at least from a content creation if not mechanics implementation standpoint. Probably could mostly figure out how to put in a new god, ferex, and I'm pretty bloody terrible at coding.
And yeah, it is a shame th'dev went on to other things. As enjoyable as Inc is, it was only ever intended to be a tech demo/testing build, ehehe. Never even really got to the good part, heh.