Harem players don't like that in general. That's one reason they play harem games to beginn with. Also Replaying porngames for the tiny variations? I could use that time for another playthrough of Baldurs Gate 3. Or play a complete new game for that matter.
Focus on one great story or you will get stuck in the weeds and the players wont thank you for it when the progress of updates crawls to an halt because you got lost in your branching narrative. Variable errors creep up and people see things they didn't want to. Or they need to wait a year for the next interaction with their favourite girl.