Seeing what other types of drivel survives and thrives on here I think you should abandon the thought of entertaining the complaints of those who have a problem with the art style. Personally, I like a more realistic, thick and "grimey" look to the women in VNs, and your artstyle matches that. And with huge tits too. Hiring an artist/co-developer would just make it less of a hassle to update.
On the other hand, pretaining to the abandonment of the game, I think you (as some others) have made an error in scaling. So many games with great potential have been abandoned because the devs want to make the Witcher 3 of family fucking video games. If you ever decide to get back in the saddle, I think a very basic story of one or two scenes with a random whore and one teaser of a related relation would be a good enough start, where people can whack off, but still feel the ache of half-empty balls, which can only be released with the vision of intercourse between relatives, by which point you cheekily flash the text: "Coming in next update
" and keep to a schedule (be it weekly, bi-monthly, quarterly or whatever works) of always adding substance with quality.
You get to it when you get to it.