Mario Kart 9 Speculation

[MandL27]

What I Want from MK9
-No more new goddamn Babies.
-No more new goddamn clones (seriously, having three Marios and three Peaches is quite enough).
-Better character selection in general.
-Real battle courses.
-Give the option to play old-fashioned Mario Kart battles.
-Maybe a rudimentary track builder with the ability to share courses online. 

1 and 2 are basically the same thing, but I definitely agree.
3... a dream list would be readding Bowser Jr. and King Boo, but I digress.
4: Definitely this; alternatively, add a Battle Race mode where DNFs due to health loss are ranked by progress through the track before disqualification.
5: Such as?
6: LEVEL EDITORS YUUUUUUSH
Now, for some stuff I'd like:
- More varied character rosters, including crossovers (albeit limited). I guess you could say this is in part from Sonic Riders, as its character rosters tend to include relatively forgotten series mascots.
- Maybe a way to drive on track narrower than the vehicle, such as a rail? I mean, the K'nex sets let me build pseudo-rails all the time, and even the Pokemon games let the player grind now... 
- Some not-useless items for frontrunners and distant lasts alike. Making slipstreams more usable would be a plus, too. (tl;dr: make come-from-behind victories easier)
- The Mission Mode from Mario Kart DS.