I can't say much about the Android version, because I cannot see well enough to even use a tablet to say nothing of a phone 😆.
Discord is great for interacting with fans, getting bug reports, suggestions, help from players and even other dev's. Files can be uploaded by users to help with many aspects of a game. I help 8+ developers through discord. It can also be a HUGE time waster as I well know, from being on more than 80 discord channels 🙄.
Sound effects are a little tricky to add to animations as I am sure you will find out. There are some tricks to actually sync this, but they are beyond my expertise... so far 🤓.
I will be looking forward to the SubscribeStar. SubStar can be annoying, but games are quite expensive to make and everything helps 🤑.