Who should be playable in the next Mario Kart game?

[CLXcool]

We all know that there will be a Mario Kart 9 someday. Not now. but when the time is right it will happen. I wrote a list on my tumblr page about who should be in the next Mario Kart game, so I want to bring this into discussion right here. They have to be characters that appeared in the Mario series, and they have to be new to the mario Kart series. Here's the link of who I think should be in the Mario kart series if you're wondering.

http://clxcool.tumblr.com/post/937371718...mario-kart

I still wish Pauline was a playable character. I'm still baffled why Nintendo didn't make her an unlockable character. It would be a lot better than playing as Pink Gold peach.