Here are 2 MK8 Easter eggs!
1) Koopa Troopa Airport?
In the background of Sunshine Airport you can see a Koopa Troopa Rock formation. It is the same in N64 Koopa Troopa Beach. Could it return again in the DLC packs?
2) Statue of Peach
The statue of Peach in Toad Harbor can also be found on N64 Rainbow Road!!!