Holy moly, you've finished the game?? Thank you so much bunnies! There's actually a reward for people who finished the game that's implemented in the coming update, but since you reached it beforehand, if you generated an ending CG, please email me it I'd love to see it! Isabelle and April were some of the first default characters to be written, I'm glad you enjoyed them!
1. An endless mode or New Game+ is on the dev plan! I will definitely take your suggestions into account when designing it
2. Seems like a good setting to have, will add it to the dev plan
3. Highly considering allowing the user to edit the system prompt in the next update. In today's update, you'll already be able to edit character memories. You can technically already edit your stats/character memories by editing the save since they're in plain JSON, if you're interested.
4. Personality changes over time is something I highly want to implement but it's a little finicky, have to think up a good solution. Definitely considering allowing the player to manually edit a character during a run
Thanks for all your suggestions! Stay tuned for more updates