The Unown Ruins were awsome with the jigsaw puzzle things, and the way you could go to kanto and play another story/ side plot there, gold and silver were the best pokemon games by far,
would it be cool though if they made a pokemon game with all four regions in, doubt it will happen but that would be seriously cool, and you got to choose any of they Starters, instead of just the ones relevant to the game, then after each region you had to complete thier elite four to advance to the new region, :D :D :D