This might sound wrong but wouldn’t it be awesome for Sora to beat Zeus into a pulp? Call it a filler plot but having such an implementation in Kingdom Hearts 3 will nail it for sure.
The Olympic Coliseum have always been the favourite past time place for players as it puts the skill of the gamer to the test by making Sora fight against other heroes in the virtual world.
Perhaps, in Kingdom Hearts 3, there can be an Olympus Coliseum where a duel tournament can take place at the top of Mount Olympus. There, Sora can challenge the heroes of heroes and also gods.
If there is to be a short plot, perhaps, Mount Olympus can be a place for Sora to prove himself as a true hero by facing the gods. Heck, Square Enix can also introduce a trophy in this segment.
Of course, this is just a random idea on how to improve Kingdom Hearts 3 and make it more awesome than before. Whatever the outcome may be, we believe Square Enix will deliver!
