Having a parking lot/front gate plaza system would really add a punch of realism to the game in the future of Planet Coaster. If they did incorporate that into the game it would be great if we could go into Sandbox mode and set park land and outer-gate land properties. That way guests in the park would be intelligent to understand where the actual park itself exists, but still functioned with the front gate plaza and parking area... if that makes sense?
We could create a roadway that led into the park's parking area with parking tolls that also counted towards profit for the park. We could customize "Welcome" billboards, and design different types of parking areas- regular ticket holders had to park in parking section B-Z, while Seasonal Pass Holders had access to the Fast Lanes at the parking toll, and parking section A, while buses had their own lanes to access the bus parking section.
Depending on how large we could customize the parking areas we could also design tram routes that stopped at each parking section and front-gate drop-offs and pick-ups. Also, if at any point in the distant future of Planet Coaster and we received Resorts in a DLC/Expansion they also gave us the ability to create bus/trolley stops that traveled between resorts, shopping districts and the actual park(s) themselves. It not only would increase profit for the park as a whole, but increase popularity for our parks over time.