Imagine this:- Endless Summer with open world game.
Like Final Fantasy 15 and Kingdom Heart wise, we can play as our MC, moving around the La Heutla island, fighting enemies RPG style, (like fighting the crab, The Watchers, etc) and yet, despite the open world and RPG style wise, your choices can effect the stories like oringinal game does, as you go the open world, you can also collect clues through the story and do side quest as a bonus.
Yet, as you play the MC, you can change apperance everytime you want, yet you can change the gender too without restarting the game.
Just imagine this. Open world RPG Endless Summer.