Giving players choices they didn't have previously DOES impact their game-playing experience (because choice affects decision-making, especially when it affects the importance of
other related decisions); and in a game where you can visit other people's zoos and other people's zoos affect what animals are available on a shared market, yes, it would affect my game-playing experience—and everyone else's perception of the importance when choosing a zoo location.
Not to mention, game functionality. What you describe would be a programming nightmare and rewrite for the way that Franchise currently works.
But it doesn't matter how what we want might affect things for other people, does it?