Traditional or CG animation, voice actors from the game srepraise their roles (No celebrities like Zac Efron or Nicki Minaj). a plot much greater than the games, and have Daisy And Waluigi have a C-3P0/R2-D2 or Beavis/Butt-Head kind of mini-arc.
i'm thinking live action, start off with one movie, get the ball rolling, then if it takes off, bring it into an avengers style movie series with other nintendo characters and characters from the ssb series
then sit in piles of hundred dollar bills and laugh at the world from my flying invisible ship in the sky
Just don't make it live action. Or similar in any way to that monstrosity known as the Super Mario Bros. film. They also shouldn't change the voice actors from the game and have Bowser Jr. make an appearance.