My Predictions for Mario Party 11

Starting Characters

 * Mario
 * Luigi
 * Peach
 * Yoshi
 * Wario
 * Donkey Kong

Debuting on Mario Party 3

 * Daisy
 * Waluigi

Debuting on Mario Party 5

 * Toad
 * Boo
 * Koopa Kid

Debuting on Mario Party 6

 * Toadette

Debuting on Mario Party 7

 * Birdo
 * Dry Bones

Debuting on Mario Party 8

 * Blooper
 * Hammer Bro.

Debuting on Mario Party 9

 * Koopa Troopa
 * Shy Guy
 * Magikoopa

Debuting on Mario Party: Island Tour

 * Bowser Jr.

Debuting on Mario Party 10

 * Rosalina
 * Spike

Debuting on Mary Party: Star Rush

 * Colorful Toads (Red, Yellow, Blue, Green)
 * Diddy Kong

Newcomers

 * Goomba
 * Luma
 * Pianta
 * Noki
 * Paratroopa
 * Flutter
 * Bowser

New Boards

 * Piranha Plant Hills
 * Plessie's Sea Shore
 * Shy Guy's Boulevard Bazaar
 * Honeyhive Highlands
 * King Boo's Scary Steeple
 * Tumbleweed Town
 * Bowser's Molten Mania
 * Rosalina's Comet Observatory
 * Candy Carameland

Retro Boards

 * Mario's Rainbow Castle - Mario Party
 * Pirate Land - Mario Party 2
 * Chilly Waters -Mario Party 3
 * Goomba's Greedy Gala - Mario Party 4
 * Toy Dream - Mario Party 5
 * E. Gadd's Garage - Mario Party 6
 * Pagoda Peak - Mario Party 7
 * Koopa's Tycoon Town - Mario Party 8
 * Toadette's Music Room