-Peeps ride various rides
-Peeps have a "favourite ride" (not sure why, but I liked this feature in RCT3)
-Peeps use the benches, purchase food when they're hungry...etc
-Peeps could leave the park (ex: to have lunch), then re-enter later in the same day
-Implement season passes, and if a peep had one, it would be displayed on their profile
-This doesn't have to be included
but I would love it if there were height restrictions on rides, and if a peep wasn't tall enough then they couldn't ride. If this were to be included, I think height check stations would be neat if implemented (although someone from the community could probably create it), and an "on/off" button would also be great!
-Walk through objects like benches, rocks...etc
Even though I did list a bunch of items I would like to see, I'm sure the peeps will turn out great, and I'll be happy if I see one of my suggestions in the game.