There's three core franchises I hold dear. The first being Star Wars, the second Sonic the Hedgehog, and the third Pokémon. Away from those cores I'm big on Power Rangers, most Nintendo games, the Forza series, and a range of films and music.
We know five of the seven zones that will be in TSR, and I'm going to go there once again. Four of the five tracks from Sonic R fit inside those zones. Is it too much to think that a space zone will be one of the seven zones to fit the last track?
Egg Hangar would fall under sky rather than space, though I would bet they'd include something similar to Milky Way to have a tie to Forces, just as I'm expecting a Press Garden track to tie with Mania.