I feel like a star wars game with the Koei playstyle would be absurdly fun. Endless waves of clones, druids, etc. Large battle, different factions and generals. Lots of lore and an established storyline. Hell maybe even a custom character option similar to dynasty warriors 4 but with more in depth customization.
Its been years since i played of DW game, but have fond memories of playing DW3,4,5 with my buddy every weekend. Hours apon hours of fun. This would be an amazing fit with star wars.
The best part of Jedi Fallen Order was in the Final mission when your at the peak of your powers and you face stacks of enemies so a DW approach would work as a great power fantasy. It would be cool to slice hoards of Gunguns in Half as a Sith. The issue with star wars games is always the Lightsaber Gore elements and how they balance Lightsaber Duels with Blocking and Lock-On targeting, I fear they may extend the range of Lightsabers to make it easier to fit into the DW Mold with crazy combo moves inseted that make the game too ridiculous. Darth Maul would be a beast against multiple enemies as he is in Star Wars Battlefront 2.