These are good ideas!
Ideally, the entire game would use a proper chat-sim interface so that you could go back and see previous chats/emails.
Then, to give hints in case an incompatible game is chosen, they could at least say "I don't like [genre here] games." rather than the generic line. Even better, each VTuber would have entirely separate bad-ending routes over a much longer game loop that would more naturally help you manage their lives and career on top of the main story.
As you can imagine, this scope is far too large to accomplish in a month-long game jam but *if* I did revisit this concept in the future I would consider it.
For now, I can only offer a "hack" solution and that would be to save the game during the recruitment screen so you could go back to it. If you just want 100% completion then you can look at my reply below which says "STREAM MECHANIC SPOILERS BELOW". In any case, you would still be able to finish the main story.
Again, I appreciate you taking the time to make your comment and I pretty much agree with you completely but due to scheduling and creative interest, I would rather remake the entire game than make new updates 😅