Snowy, this isn't just a few questions. It's at least two handfuls or two thirds of a baker's dozen! But I love them all so I will answer them some.
Full version will hopefully be released in under two and a half years. I'm reaching a deadline that I'll probably make so I think I'm on time? The final game is planned to be around 7.5 hours (so, basically three demos, including the demo content). So you'll get an extra 5 hours of content. I can't comment on gyms or Pokeballs though so we'll seeeeeee
Also Route 1 is Cotton Island from Plok.
I'm pretty sure Misty has carotenemia from eating too many carrots, explaining the orange color. And, Ash's obsession is an inference from an old Japanese trailer for the first Pokemon Movie where an older Misty is shown with another lady and a child. The child and the lady were designed to represent some artists, with the lady appearing in the movie but not having a child. Anyway, this led to the reasonable speculation that the child was supposed to belong to the older Misty via Ash. Nintendo later denied this, but instead of saying it wasn't Misty's child they denied that Misty was Misty in the trailer, which funnily enough seemed to be an admission that the child belonged to the orange-haired woman who definitely isn't Misty even though she looks exactly like Misty and has the same fashion sense. Basically, it seems like Nintendo shifted characters' destinies and axed Misty (which they later admitted doing in another context) so Ash could continue the Pokemon anime and run off with May, Dawn, etc.
Anyhow, thanks for posting and playing!