Thank you so much for your kind words! That's really nice to read, it's very much appreciated! I'll definitely take 'terrifying yet intriguing' haha! ^^
And that's a neat suggestion! I'm afraid the vast majority of Acts III and IV are already written, and certainly the plot is very much locked in at this point - and while there's almost no branching in upcoming parts, there's not none. (Also, I won't go into detail here because people might be reading this who haven't played Act II yet, but there is an alternate ending to one particular path, near the end, that may be the kind of thing you're looking for - and it's certainly not the last one of those we'll be seeing.)
Alternate endings like those aren't set to become a big feature though, apologies! At this point, it's not really within the scope of the project to insert too many branches; for the most part, the branching will remain tied to the romantic scenes and largely separate from the overall plot (and I also think that brings a certain tension that serves the story well). I've got loose plans for a future VN with a bit more brancheyness that definitely sounds like it might be of interest to you, but obviously we won't be seeing that for a couple of years at minimum, ha. Anyway, I hope this information helps, even if it wasn't quite what you were looking for. Thank you for playing and enjoying the game, it means a lot! ^^