Dare I suggest ....Omochao?
If you don't already have an idea/don't plan on replacing him, what if instead of Lakitu, you had Big in the Eggmobile?
IMO that seems a tad ridiculous. Perhaps a repurposed version of the UFO from Sonic CD or Mania.
Dare I suggest ....Omochao?
Kart now has a new dynamic camera! Horizontal position is always consistent now, only zooming out when you break top speed, so you aren't always escaping the camera, leading to a better feeling of control. The vertical position will lag behind, just a bit, to make those slopes feel like a roller coaster. When drifting, the camera will pan over to show where you're going for more visibility (and to make close corner cutting feel even tighter!). When boosting, the camera will zoom close in before zooming back out, giving big boosts greater feeling of power.
Noticed our new drift sparks and booster effects, too?