That might be very difficult to rotoscope, but, if everyone is okay with me doing an exceptionally bad job of it, it’s doable! (Not that I anticipate much of my visual additions to be good, but I figure that’s not really the point of this whole endeavour.)
I figured you’d do the whole thing with G5 style animated sprites overlaid on the actual film.
Very important question time: who is Holdo’s partner pokémon?
Some kind of fairy type. Maybe Snubull.