48+ FPS in movies need changes in cinematography to go along with that frame rate. Lighting, sets, costume design, choreography, special effects, all need to be tailored to the higher temporal "resolution" for lack fo a better term.
Taking The Hobbit as an example, the 24 FPS version of the fight scenes were your typical movie tropes. Blurry and shaky as hell, there's no way to tell what the hell is going on except for the one or two characters directly in front of the camera.
The 48 FPS version brought out the incredible choreography of the whole thing. you could see the detail in all the movement, the special effects, the customes, etcs, EVERYWHERE. You could follow the fight in the background between a single dwarf and 5 goblins just as well as the fight happening in the foreground. A fight that went completely unnoticed when I watched the 24 FPS version - because it was a tiny smear in the background.
Probably the main thing that sold me on high frame rate movies.
Just imagine those epic war movies that came out over the last 20 or so years (fantasy or otherwise) and given the same treatment. No blurry shots, shaky cam, out of focus people, smeary pan swings, no action slow downs/time stalls, just full speed the entire time throughout the whole thing with 100s to 1000s of folks just going at it.