User blog comment:Lol-ionel!/All stars voices/@comment-25034020-20150213023714

My guess for Cures are:

Max Heart: Black & White Splash Star: Bloom '''Yes! 5 GoGo!:''' Dream Fresh: Peach Heartcatch: Blossom and Marine Suite: Melody Smile: All Dokidoki: All Happiness Charge: All '''Go! Princess:''' All

Now with the mascots:

Max Heart: Mepple Splash Star: Flappy '''Yes! 5 GoGo!:''' Syrup Fresh: Tarte Heartcatch: None Suite: None Smile: None Doki Doki: Sharuru and Davi Happiness Charge: All '''Go! Princess:''' All

This was written by pure guess. I wasn't watching the trailer because I'm at school (free time) and YouTube is banned so I couldn't use it to make my guess a bit more accurate.