Hi Improb, thank you very much for your feedback and I'm happy that you enjoyed the game! :)
Indeed, at some scenes I was thinking about switching to an SD style to make it more fun. There were some problems that let me decide against it, though: First, players who are not as familiar with anime tend to be put off by that. Second, more importantly, the AI art is limited in that respect, as you suggested. It's pretty good in giving cute SD characters (which you can see at the start of the game with Petra-chan), but funny, hilarious characters are difficult to generate. Using a larger font size would indeed be an idea. It's just that in some scenes it will cover too much of the picture, I felt. Maybe I'll add it as an option.
The timing of a VN is always a very crucial and difficult problem. Ultimately, it's also a matter of taste of the player: remember that I thought your game might be a bit slow? Maybe we have simply different taste there? I will have to collect feedback from multiple players on that to find the optimal amount of progressing. I will also revisit some of the "slower" scenes and see whether extending them slightly would seem to be a good idea. It's definitely a good point to take a closer look at, thanks for pointing it out to me!