I dont agree with this there are many poeple that love innocent holly corruption and would like to
make little holly into a gillian with ivys help
and this scenes with mark,robert ,bouncer and lena and ivy will take her probably on partys with drugs in the future will happen ANYWAY eva will already draw and write this scenes
so it should not be this hard for eva to figure out to make it work because its not much work because this SCENES WILL EXIST ANYWAY
and you can engourage holly as slutty/mean lena and ivy so eva should firgue something out
so i really dont understand the no cheating police in a CORRUPTION GAME on cheracters like cindy,alison and holly because they all will have corruption ROUTES ANYWAY
My educated guess: If you want the possibility of a cheating Holly in the future, then perhaps corrupt her
before you make Ian date her. In this chapter she can hit on Ian even if they're not together. And at the same time, she can fuck Mark and even be open to checking Robert out (which is not an oversight or a bug). So you'll have your dream of Ian falling for Holly who is more adventurous and who is wrapped under Ivy's thumb so she'd be more likely to listen to her if she happens to tell her to keep fucking other guys even while dating Ian (or ask for an open relationship).
Just going to point out that tying the scenes together with writing requires way more effort than simply drawing the art and writing it in the context of a pre-planned linear path (with no other complications). You can isolate those paths via a simple use of variable filters.
What you're proposing though, is writing a completely different path that accounts these new possibilities. That way all Holly's interactions with Ian and Lena would need another set of alternative dialogues because the current ones didn't work.
To provide a simple example: there is currently a path where Lena could get together with Louise late in the game (after Ivy blows Jeremy). On technical level, it simply enables Louise route for Lena, even if it's late so it functions the same as the early Louise path. BUT. In this branch, Lena doesn't have access to a "dominant" route. So unless Eva implements a scene where Lena can boss Louise around and become her mistress, then the secondary path will always feel tacked on and weaker than the main path, despite having access to the same scenes (after Chapter 9). And this path was actually intended, and is not a bug. But Eva still struggles remembering about its existence (or about the differences with the main path).
Now, imagine if you're Eva Kiss and the players tell you about these inconsistencies, expecting a properly believable cheating path from you when you didn't actually plan for one at all at this point. What would you do? Sacrifice your intended vision just to let the players see more content? But then you'd have to write alternative dialogues for every scene to make the narrative more cohesive. Or would you simply lock this possibility and follow up on your initial plan, to keep your narrative as focused and easy to write as possible? The choice you make would either define you as a good dev or a lazy dev.
I'm not stating that cheating shouldn't be possible (I already provided an example for such possibility), but it's only up to Eva how to implement it. If she wants to make the current Ian x Holly's route separate from single Holly exploring different guys (at least for now), then you can't really shoehorn that option into the game if you care about your own narrative quality. If that option was INTENDED, then yeah, I'd be all for rewriting the plot holes to account for the new possibility even if character-wise it makes no sense yet (Ian hasn't gotten a chance to fuck up his relationship with Holly). Holly was open to explore Mark or experiment with Ivy in the first place because she thought Ian wasn't interested in her. The only force powerful enough to make her reconsider her commitment to Ian is actually Lena. So who knows, maybe Lena will be able to steal Holly away from Ian in the future.