The vampire path is finished, you don't become a vampire, though (the date on the beach with Beatrix is the ending for that). Did you see the ending of the game? Some characters are featured there, if you have grown close enough. If you are thinking of some specific paths that feels incomplete, do let me know which ones and what's your reasoning. No promises, but I could always add something more if I feel like you are right.
There are a lot of scenes that aren't repeatable, and with no gallery you might have to keep a ton of saves if you want easy access to many of them, yes.
You should wait for the buffer overflow version, if you want the full experience. XD
When you play the last quest/chapter, the game has 2 different paths, depending on whether or not you interacted with all the secret statues, so it does play out in the game.
I see, no, never made it to the end, I always ended up feeling as if I missed stuff or as if I rushed stuff & restarted, till at some point I kinda gave up. Then came back and started all over 2 months later, but at some point same thing happened. That repeated over the last year basically, lol.
After reading the latest rating of the game I think I have an idea what kinda happened. I feel as if (for me) too much stuff happens at the start of the game, according to the guide I had to consult at some point I basically saw all Beatrix scenes before even finishing chapter 2, leading to a weird feeling of not really having too much to look forward to in the next chapters. Since those scenes with her mostly trigger randomly afaik, there wasn't much to do about it, sure, I could have not talked to her at all, but I was worried that would mean I miss out on scenes with her that happen during chapter 1 only (not sure if that even is the case ofc).
Perhaps seeing the final scene with her + the ending of the game would have solved my issue of feeling as if things with her go nowhere, really, but it just is difficult to commit to her (or any other route I saw so far) because from the scene guide it doesn't sound as if they are too intricately connected with the rest of the game. Which isn't bad or wrong, it just kinda breaks the flow of the immersion, in a way. Problem is I 100% should finish the game first before trying to tell you what might or might not could be expanded. I understand if you don't wanna spoil things but is there some sort of pay-off for following through with Beatrix's route? She seems romantically interested in the protagonist, but also kinda not?
I'm probably not great at explaining my thoughts here but that is, in general, something I felt in regards to the other routes I did/started like e.g. Ariel (she has few scenes, all of which are basically done in chapter 1 if the player talks to her enough), same with Carla as far as I remember (think I saw all of her scenes before ending chapter 2) it just leaves me with this thought of "why would I even play further when this has been it, basically, and none of those characters, despite seemingly being romantically interested in the protagonist, not just for a quick session, seems to really be a part of what's going on otherwise - despite especially the Vampires being 1 of the main factions from what I understood. And they ofc do influence things, but Beatrix doesn't really seem to play much of a role in the protagonist's life at all.
Ironically the characters that do have a continuous impact are the ones that are clearly vile & have nothing but ill intentions for the protagonist. (Eliza, Sonya, every person related to the cow path)
To illustrate things maybe (and don't take this as an attempt of being snarky or anything) I can describe it like this: From what I saw and experienced with them I couldn't really tell apart the differences between the routes that (as far as I understand it) are meant to be more wholesome relationships (e.g. Carla, Beatrix, Kira) and the crap evil people like Sonya or Eliza do. There is not much interaction with the npcs outside of the selection of scenes that make up their routes, making them all feel as if they just use the protagonist a bunch of times & then are done with her. Ariel for example never playing a role again after her 3 scenes (excluding the 1st interaction which triggers her appearance) from what I could tell makes her a lot less appealing than she, in my opinion, deserves.
Hopefully this isn't to confused and disjointed, and, again, I do like your game a lot & am sure part of what I experienced is just my own personality as well as perhaps not 100% getting how certain things are meant (stuff the characters say etc.).
Or, if that is too much spoiler, if you think I'd be disappointed at the end when I am hoping to have some variations of happy endings with the different romanceable NPCs (Beatrix might be my fav but it's not as if the likes of Carla, Leah, Kira and even Edith (in her own way) are unlikeable, quite the opposite. What I saw of their routes were definitely my highlights of the game, hence I am asking about that aspect of Caliross specifically, of course. You write nice interactions & the humor of your writing actually hits the spot for me, it's not too silly, it isn't edgy, it's just genuinely amusing. Also I like wholesome dommy stuff which Caliross seems to have a lot of. 
