it would be cool if they made an entire mission mode campaign like sonic transformed's world tour, where you beat individual missions on a world map to progress, and receive stars for completing a mission based on the difficulty you play it on, and have those stars be used to unlock characters and vehicles once you have the required amount. Sadly world tour suffers from lacking mission variety, while it does have some cool ideas like traffic attack and tank pursuit missions, it doesn't have enough of them to stay interesting across an entire campaign's worth of missions. A mission mode with world tour's scope and mkds's crazy mission ideas would be absolutely insane
