Heh, damn Hasbro. To be honest, I didn't think about licenses, just doing this for fun. I'm definitely for something as open as possible, I heard good things about CC-BY, but I haven't made my research yet. Since you asked, you are free to use it under CC-BY even if I later set it under a different license. I would love to see what you do with it so send me a link ;)
I would rather stay away from those unless I absolutely have to use them, which is unlikely.
Here us the Anti-Capitalist Attribution Cooperative License: https://noroadhome.itch.io/acaclicense