Grinding same thing over and over to earn enough points or money to advance especially if the points/money earned per grind is very small is a game killer for me . I usually cheat if I can with this because I don't want to waste my time grinding.
I don't know what the max number is, but I think if you start losing track of the girls or become hard to meet the needs of every girls you have in harem especially with games that have points system then it probably is too big.
AI for help with coding fine.
AI for images no way. I have seen too many mistakes in AI images especially with hands and feet. I have seen AI images of person with three arms or legs or legs bent 90 degree wrong way.
I avoid games with tags: scat, NTR*, rape, urination*, furries, gay, censored, real porn.
* I will play if those tags are listed as avoidable by dev.
Sandbox is usually a no no.
I generally avoid games made with Honey Select because usually they have women with unrealistic huge breasts and other...
I like game. Good story and I like that Dev didn't go same route as many games do- women/girls with perfect body with big tits or over sized tits and so.