So in New Super Mario Bros Wii we got the SUPER GUIDE which was pretty neat because Luigi's moves were incredible and it only help a little bit. No way I could imitate those SUPER MOVES.
For those of you who played Super Mario 3D land we got a Tanooki suit power up that's make you invincible forever. Which help way too much and made is too easy. And by some chance you still didn't course clear you get a P-wing power up that makes you fly to the goal pole which is Ultra Cheap IMO
So do you want this game to have no assist items or have a new super guide or something totally new?
Ok for my own Idea I was thinking of a Yoshi assist Item if a player dies for about 10 times you get to do the course again except this time with a Yoshi which you get to ride except this one can do a ULTRA JUMP by crouching down
and pressing the jump button. And it can also gently fall down by wiggling it's feet forever and if you have the raccoon power up with you and fly you take the Yoshi along with you.
You can call it Super Yoshi if you'd like hehehe if this game had Star Coins again I will die on purpose just to have this power-up hehehe to get them coins