New worlds ideas
First idea, a world based on the maps of Crash Team racing, Nitro Kart and Nitro Fueled (the new maps of the season pass made by Beenox). Maybe in the background it would be nice to glimpse some karts every now and then.
Second idea, a world (or more worlds) based on Crash Tag Team Racing theme park maps, perhaps with bosses like Willie Wumpa Cheeks.
Third idea, perhaps this is the strangest. A pixel world based on the games of the game boy advance (?). I'm not so sure about this idea.
Small change, I don't like the time trial boxes that much, they would be nice if they were yellow like in all games.