1. Yeah, that would be better, but letting the player know what he's missing (clarify if there are not going to be any FMC scenes for example)
2. Makes sense, but nobody wants to feel like they are missing content, so I don't like it anyways
3. No, what makes me skip the text for that specific part is the fact that all of them are new characters, I don't care about any of them, I'm here ALL IN for the FMC, I want to see her corruption, her new scenes, everything, why? Because you introduced her to us like our girlfriend and we've been here ONLY because of HER corruption, new characters makes the game convoluted and uninteresting, in the Mansion I was like okay... whatever I'm only here to see HER scenes, I DONT CARE about all these randoms, let me skip all of this so I can continue the interesting NTR.
Even the blue haired girl (the baker wife) story felt uninteresting, and too much, all that thing with her brother was... boring because I'm not here for that neither for her, I would have liked it more if we make things simple, no need for crazy setups or ghosts, thats my taste tho.
I rate the route until the RV 10/10, seriously, I'd add content to that and try to not invest time working on random stuff nobody is here for (imagine if all that work for the mansion was invested in new bakery scenes or varied pixel scenes around the village or finishing the game, maybe you would be developing a new route already), I say this in the most positive way because I really really like the game, I'm supporting you on patreon.
Also, the sauna puzzle is too boring and time consuming, whatever takes us out of the immersion is bad in my opinion, I had to look at the guide for this.
Why? Because I didn't care about it, reading all that text that is not related to the FMC corruption makes me skip it, it bores me.
The best feeling ever is when you are so interested in watching what else is the FMC going to be doing today, you want to track her down, see what she's doing, is she falling for him? Is she resisting? What is he thinking now? All of that is really exciting and you are an expert in that regard.