Yes... AS LONG AS they balance the items, and stop giving trailing players the broken catch-up items. If they made the item drops more like the original SNES, or even N64 game, the game could accommodate 24 karts. If two-dozen players were spamming MK8D's insane item rain, the game wouldn't be worth playing.
When there’s 12 players: I win: 1st place Not bad: 2nd-5th I suck: 6th-12th When there’s 24 players: I win: 1st place Not bad: 2nd-11th I suck: 12th-24th
1st Place Mario 944 Points 2nd Place Baby Peach 613 Points 3rd Place Waluigi 588 Points 4th Place Dry Bones 584 Points 5th Place Daisy 462 Points 6th Place Yoshi 450 Points 7th Place Wario 438 Points 8th Place Bowser 421 Points 9th Place Baby Daisy 413 Points 10th Place Dry Bowser 390 Points 11th Place Funky Kong 389 Points 12th Place Baby Luigi 368 Points 13th Place Luigi 367 Points 14th Place Koopa Troopa 351 Points 15th Place Bowser Jr. 332 Points 16th Place King Boo 328 Points 17th Place Baby Mario 289 Points 18th Place Peach 288 Points 19th Place Donkey Kong 278 Points 20th Place Birdo 271 Points 21st Place Toadette 263 Points 22nd Place Toad 255 Points 23rd Place Diddy Kong 233 Points 24th Place Rosalina 221 Points