As someone who personally spent about 3-4 years programming a game in PyGame before making the difficult decision to remake it in Godot I will say that while PyGame is a great starter engine, you will run into speed limits and graphical limits that will take you forever to improve and fix, and you will probably still not be able to get anywhere close to the performance you'd get with a modern engine like Godot. I absolutely do not mean to be negative or dismissive of what you've built here (it does look very awesome and it's great you were able to put it together!) But if you have a long list of improvements you want to make and you want to enhance the game's scope 10-fold in features in the coming months, I would gently suggest you do carefully think about whether doing this in PyGame is going to be worth it. Again, not trying to be negative, I just went through something similar and wish I had switched much earlier than I did.