Hopefully just as fun as KH2 if not more.
With the power of the PS4 and the Unreal 4 engine the Gummi ship segments hopefully will be even further enhanced.
I'm thinking that a decent way to do it is to have a couple of the Gummi ship routes be based off of famous starship-fight scenes. The trench battle from IV, or the whole opening sequence from III, for example. Completing all these missions and meeting certain criteria on all of them will get you the Keyblade "Red Five," a design based off of the X-Wing with a lightsaber-like shaft.
I really dig that idea since most of the big space battles in Star Wars (especially Battle of Endor in Episode VI and Battle of Coruscant in III) are very epic.
The opening shot of the Coruscant battle alone can give one chills as the first things you hear is only war drums, then one single Republic Venator-Star Destroyer glides into sight with Obi-Wan's and Anakin's fighters coming into view.
They fly over the surface of the Star Destroyer and once they pass it and fly
down you realize that there's a battle with tens of thousands of ships of both the Republic and the Confederacy going on and you have the city-planet of Coruscant (from which more Star Destroyers are starting to join the battle) as a backdrop:
[video=youtube;hqgphpiO0L8]https://www.youtube.com/watch?v=hqgphpiO0L8[/video]
The dialogue of the prequel trilogy may have been cringy as hell for most parts, but they managed some damn epic space shots.
Heck, when I first watched Ep. III I was even disappointed that we got to see so little of that titanic battle and on subsequent watchings I made it a habit to ignore most of Anakin's and Obi-Wan's bantering and focus on the space battle in the background instead.
The only worry I might have about this is that the Gummi Ship is way too frail to survive in an environment like that compared to what actual Star Wars fighters are made of.
Not to mention that unlike the Heartless and Nobody ships, nearly all of the Star Wars ships (capital ships and fighters except the cheap Imperial TIEs) are heavily shielded.