That would be amazing! It would sell incredibly well too! It just begs the question why they don't do that? World Seeker could have been the closest thing to that potentially I guess?
A create your own character system for OP would be amazing too, maybe it could be like Hogwarts Legacy or something too?
Although I suppose it would be far too complex to have your character choose between piracy, being a revolutionary, Marine, WG agent or w/e but for simplicity maybe have your character be a sort of mercenary or just free agent and you can choose who you want to ally with by the end of the story, depending on your experiences with each faction throughout the game?
Vampire the Masquerade: Bloodlines gave you several types of endings depending on who you choose to ally with, which faction of the possible warring ones and some endings were fatal for you unfortunately, but you could also choose to go lone wolf and literally flip off one of the main factions who tries to recruit you by the end too lol.
It was a really interesting and fun concept, absolutely brilliant game too!