Would a safari zone like way to get your starter be cool? What about different type triangles?

I played a hack before that had a Safari Zone area where you had to catch your starter there. I really liked the concept, though I didn't like that certain starters were harder to find than others (I mean if you're getting a starter, you shouldn't have to spend 30 - 45 minutes walking in circles hoping to find the right one, and then on top of that hoping the Safari Ball actually catches them before they run away. If not for save states, I would've quit before even starting the game because of how that played out lol).

My only suggestion would be to make sure it's foolproof. Make it so the player can't run out of balls and just be stuck without a starter / can't get more if they run out, make it so it can't be abused to catch multiple starters, make it so the starters are at least somewhat balanced in power, etc.

But yea, I thought it was a cool twist when I ran into it once before.

If you don't mind me asking, what do you mean by "type triangles"? Like how fire / water / grass are all good or poor against each other in a rotating diagram? If you meant make it possible to have multiple ones (and your Rival always picks the one your weak against), then that would also be a pretty cool concept. It's always nice when a game gives you as many options for a starter as possible, and keeping them balanced is a great way to keep players from choosing the same few Pokemon when they play. If you follow that formula though, just make sure each options evolved form stays within it's place in the triangle, and doesn't negate the weaknesses by adding a new type through evolution.

These are all just suggestions though. It's your game / idea or whatever, so do what you feel is best

Would it be cool if it took place 20 years after Pokémon Red and Blue, and had Blue as the Champion, Red the Leader of the evil gang, and people like Daisy (Blue's sister) as gym leaders?

SilverHyruler : It would work but I don't think Red was evil though. Having your starter Pokemon obtained via a safari zone-esk method will probably be successful but it may make some Pokemon harder to encounter plus masterballs would have to be the primary ball though.