You're focusing on one theme too much, the slavery theme. That's why you notice it everywhere. The same could be said about greed. Why does slavery exist? Greed. Why does poverty exist? Greed. Capitalism? Greed. It's reductionary, like what I just did. It could easily be said that every story is about Freedom too. Freedom from slavery, power, greed, etc. Ms. Ren isn't just missing because she's a slave, she's missing because powerful, greedy people wanted to abuse her.Runey don't mistake any of this with being a hater, I like Harem Hotel, but I would like to get some clarification on a couple of things you said.
It seems weird to me that you say the story is not about slavery but all the main characters except F&E have direct ties to the overall slavery story focus. Lin is obvious; as is Maria; Ashley is looking for a slave that impacted her life; Autumn is in line to be the new 'pope' of her religion that seems to be instrumental in the elf slavery; Kali's story line focuses on her father who is making slave 2.0 from the elf slaves; lastly Android is a robot that are effectively a slave that is making a new race of robots (I wager that's going to intersect with Kali's storyline). This is not including 5/9 side characters and other reoccurring characters that are also involved in the slavery focus.
Right now it seems like the better way to encapsulate the overarching story would be "Changing the world by getting rid of slavery". But that's still a story about slavery.
I guess in the next few updates we could discover that there was an error and Maria is not a half-elf, Ashley imagined Mrs Rin, Autumn's story line never goes into the slavery aspect (which would be kinda plot-holy), Kali's dad's elf 2.0 project fails and we don't get the whole "are robots slaves" direction for Android, but that would be a really weird overall direction.
The point is, every theme bounces off each other, and always has. I think what you really might be saying is "I don't like the slavery and wish there was less of it". You notice things you hate more, after all.
It was certainly my intention to front load the sexual content, because I hate it when games with porn in them string you along forever. That content is also repeatable, so you can always come back to it. That content keeps being refreshed with outfits, or freestyle. I wouldn't say it's 80%-90% story, It's more like 60%-70% story, which is actually what most people polled prefer. 1 sex event for every 3 - 4 story events. (With a priority on story, meaning I don't just include sex to fill a quota, I do it when it feels right)Also I wonder if one of the reasons you get bad feedback is that the 'meta' for visual novels is a small period of build up/forming relationships then once that happens they are 50/50 story to sex scenes (if not more tilted to sex scenes). You were doing this but now you are doing 80%-90% story with the remainder being sex scenes. This makes it seem like you're trying to make some kind of statement rather than make porn.
Just a shower thought though, dunno how accurate it is.
And no, I'm not "trying to make porn". As I've tried to make very clear, I'm trying to write a story. This is an Adult Visual Novel.