Hey, thanks for the detailed comment; I always love to hear that people are really enjoying the story!
For your first question - You're spot on about why I avoided giving significant choices; I feel like avoiding them allows me to craft a much tighter story. As for including small flavour choices; I certainly could, it would be a little more work, but nothing prohibitive. The main reason I don't is because I feel like a lot of players actually don't like too many choices; they feel that they introduce an element of uncertainty about choosing wrong and missing content, when really they just want to read a good story. I honestly don't know if the way I'm doing it is better or worse, but at this point I think I'll stick to what's been working. Whenever Cosy Cafe finally finishes, I might consider changing things like that for my next project.
So the second question about the eyes - I notice the same problem occasionally while I'm rendering, and try to avoid it when I do; but it's subtle enough that I sometimes miss it. The problem is actually caused by the scene lighting and the way it interacts with the eyes from different angles, so unfortunately it's not as easy as just fixing the models.
As for the final question - I do try to hide the MC's face where possible, and I'm never going to show full frontal shots of it, but I do put some profile shots in when it's necessary to make a render work. I think the first one was actually on day 18 when the MC is sitting in the corridor outside of Sarah's room, though perhaps the one in the latest update was a little more revealing. I don't plan on going really beyond the side shots you've already seen though.
And your English was perfect! Thanks again for the comment.