Great game! The animations you've already got are awesome and the economy is pretty solid once you figure out how to sell monsters. From one dev to another here are my notes.
1. More animations. For an animation heavy kind of game like this, these are what will set you apart from the competition. There should at least be animations for the main character breeding with all monsters, though greater variety would only improve this.
2. More things to spend money on. Once I figured out how to make money it was all to easy to get over 100k quickly. Meaning that the monthly payments are next to nothing for me. Perhaps using the brothel, or buying supplies for monsters (i.e. stat boosters, costumes, more expensive "shiny" monsters). Something to reward the player for their work.
3. Just keep going! I can see where you're trying to go with this game and I think it's working. You just need to keep going. Really great work to the whole team!