So this game takes place on Prism Island, confirmed to be separate from the Mushroom Kingdom. Let's look at all the other times Mario has left the Mushroom Kingdom:
-Sunshine: Piantas, Nokis, etc
-Superstar Saga: Beanish, Hoohoo people, etc
-TTYD: So many different species I can't make a full list. Also the original PM even though it WAS Mushroom Kingdom, did this too.
-SPM: Again a variety of different species, most of them are designed around geometry and shapes.
-Galaxy/Galaxy 2: Lumas, Star Bunnies, Gearmos, Whittles, etc
-Dream Team: Pi'illos, Shelltops, Brocks, etc
-3D World: Sprixies
-Color Splash: .....Toads
yeeeaaaah anyone else think the "Sticker Star Effect" is causing them to ignore even the most obvious traditions even the main series has been following?