I mean...if the NTR ending for HC3 is gonna be anything like it was for the first two games then all four of the heroines are gonna become sows sooner or later anyways, but as of Update15, i'd say that Haylen is...not QUITE there yet, it's hard to say cause the Update ends right after that absolute banger of a last scene so we don't really see how much different Haylen is after the events of Update15, especially outside of the bedroom, but since she had finally seen Jazon for who he really is and still decided to have sex with him, i'd say that Haylen is officially in the endgame now, the first one out of the 4 heroines might i add.
If my prediction is correct then we're gonna get 2 more sidequests for Haylen, MAYBE 3 if we're lucky and/or N_Taii is generous...but i doubt it, and if there's really only 2 more quests left for Haylen then in the next one she's gonna completely flip to being the corrupted version of herself, i'm talking heart shaped eyes, anal, sex with Jazon while Leto is around, threesome with Neyvir (probably still spelling her name wrong even after 2 years but at this point i'm blaming N_Taii for giving an unimportant character a name like this), basically everything you'd expect from a late game Update.
Although, this has been a rather small thorn in my side for some time now but a thorn nonetheless, the problem with Neyvir (CURRRRSE YOUUUUU BAYLEEE N_TAIIIII) is that MOST of her content is locked behind the $20 tier, she's got like 5 scenes or something like that and at least 3 of them are only available in the $20 version of the game i'm pretty sure, so when inevitably at some point in the future Naevyr (I THINK I GOT IT RIGHT) and Haylen starts having sex with Jazon more...shall i say "openly", her new personality that she has developed over the course of multiple back to back extra scenes is gonna be lot more out of the blue for people who never played the $20 version of the game than to people who did, even in Update15 i got this same out of the blue vibe when Haylen caught Jazon with Naevyr and she was calling him Master and admitting that she has been looking forward to this for days, i was like "hold on a second, when the fuck did this happen", and i think the reason is because about 3000 years ago, when the game was still in it's very early stages, N_Taii either made a post or just simply mentioned something about it in a PoL, where he basically said that he wants to add new characters for Haylen and Lily's stories that are similar to Alys and Stenia, characters that are still technically extra characters without portraits, but they're directly part of one of the 4 heroine's storylines, hence why we have Naevyr and the barmaid with the glasses and the big breasts, and while they're still just like any other extra characters, over these 2 years they pretty much became their own sub-group of girls where they're more than just an extra character but they're nowhere near as much as a side character, and because of how much people are against the idea of extra scenes with one of the four main girls, N_Taii has slowly turned to the next best thing, this new sub-group of girls who are always around the 4 heroines, and while i certainly appreciate that i don't need to cough up 20 bucks if i wanna see EVERYTHING Rose related, these 4 or 5 characters have certainly suffered because of it.
I have no solution to this (not that it NEEDS to be fixed) and i don't want anything changed this late in the game, but i really wish that for HC4 N_Taii would come up with a different way of making extra scenes cause while i certainly don't want extra scenes for the main characters, i also don't want characters like Naevyr, where by the end of the game 65% of their overall screentime will be only available in the $20 version of the game.