>>50008805The graphical fidelity of the models was more on par with Gen 6 instead of the downgraded Gen 7 variants. They likely made the swap to the gremlin ones when they decided they wanted to show the dances for Z-Moves.
The original beta map for Melemele features Xerosic as a map object, suggesting be was either going to play a role or that his similarities to the Ultra Recon squad would be addressed-- or that the Ultra Recon squad were originally planned for base SM.
Concept art suggests a lot more explorable areas, like Wela Volcano Park, the golf course, the outer areas of the Lake of the Sunne/Moon
There was probably going to be Blastoise fire trucks to compliment the Charizard glide
Plenty of unused areas are still loadable in the final game, like more rooms to the players house and the initial gym battle background that would later get repurposed for the Kantonian gym in USUM.
Alola's original champion was apparently meant to be something else according to the reference they gave them in XY.