I understand your point, but even in a crowded city, this isn’t the solution. If your city’s courts are booked out, whether through online booking or people sitting outside and calling dibs, the solution is always “build more capacity.” The problem exists because more people want to use the area than the area allows. Forcing online registration shifts the problem: there’s more capacity because there’s less tolerance for bullshit, not because there’s less interest in using the space.