Hey there, I saw your post in the KHI makes a KH game thread.
To answer you're question, until now it is purely theoretical so as for now we won't be making a real game out of it BUT if we manage to gather a lot of people to join the project and actually have some people who can render stuff etc., in that case I think we would be making a game out of it
It's really possible to make a game out of it so yeah, it isn't unrealistic at all
If you wanna joing the project, be free, any help is appreciated, although it may be kind of confusing at first since everything's kinda chaotic hhe xd
I hope this answers your questions