Gosh...I wish I could write this script.
Unfortunately, legendary is owned by the WB. Legendary is also a Chinese film owned company which are high on special effects. And though the WB has a better idea of how a live action Show should run in a comic built world, they constantly do not portray the Internal Conflicts very well of comic characters on big screens.
Instead, they by far shoot ton of special effects that gloss why characters are driven MAD by why they do. If Ash's internal conflict of why he needs, or has to be the best in the world, is glossed over with special effect pokemon and pokeballs, I don't see the reason in attempting the film.
Internal Conflict lacks in Big Chinese movies. However, in Japaneese Animations they extensively use it through narrative, which makes the watcher understand all to well the motives of the characters. It is harder in in live action films because narrative is shown through dialogue, which if not written correctly, can create a wooden film. Chinese films are notorious for creating wooden dialogue.
Like all great players, Kobe, Shaq, Wayn Gret. Shawn White, Michael Phillips, there is a huge internal motive that drives these kinds of athletes that goes far beyond of wanting to be the best. And when they are interviewed, it is up to reporter to dig that out of them. It's internal conflicts that really drive great players to real glory, the question is, is whats Ash's going to be?