To have a working demo build at least on itch.io. If I don't make it I'm gonna give up on that one and go again with something smaller scope (since right now I'm doing turnbased cardbased battles with managment on the side, which make me worried it will be either overscoped or not enjoyable 😅)

Scope is very important but most importantly, if you're unsure about something, you need to prototype and make people test as soon as you can. It can help you narrowing down smaller scopes inside the big scope :D