Crash with an Aku Aku follower is the coolest thing and makes total sense. Only thing I'd recommend is not forcing the kart he rides in to be blue, I think I understand why you opted to do it that way (CTR) but personally I think it takes away from the point a bit. I'm not trying to big a jerk or step on any hands though so I'll leave it at that, still a fantastic addition either way.
Thankyou for understanding ! <3