Hey, thanks for taking the time to write all this, and I'm glad you're enjoying the game!
About Rosie: you don't need to beat her. The wager is meant to be lost, and that loss is how the story moves forward, so go ahead and let her win. And your reaction to the two succubi made my day. That was exactly the idea:D
You're right about the balance, and that includes the cost of that waifu. A rebalance is already planned for the next update. The respawning at night is noted too
More story is on the way, side stories included. Thanks again for the honest feedback!!