My Idea for A great SF Movie.

Street Fighter: Union
This would start after a premise of Bison trying and failing to get the Dark Hado from Ryu.
The meat of the movie is Ryu fighting off Evil Ryu within himself. As Bison's Attempt has unleashed him. Evil Ryu fights in ryu and when he wins Ryu transforms with a bolt of black/red lighting from above. This occurs while he is visiting Ken in the states. Guile ,still an army man comes out to assist Ken with this evil Ryu, Guile Dies in his attempt. Ken manages to escape with his life barely.
Chun-Li has been made aware of the danger via Interpol and heads to the states.... Along the way Chun-Li gathers some of the Original Fighters to assist (dhalsim, Zangief, and Honda).
Evil Ryu feeling the presence of the Dark Hado heads to Japan (via boat stow away). Here he finds akuma's Lair. They have a big ass brawl Evil Ryu prevails, but is unable to KILL Akuma as Ryu inside prevents him form doing so.
Akuma is shamed and disappears from the island.
Bison next goes after Akuma to get the Dark Hado enlisting his old cronies Balrog and Vega.... Unknowing to Bison, Akuma knows of this attempt on Ryu and allows himself to be captured. Bison tries and successfully absorbs the full power of the Dark Hado from Akuma and transfers it to Himself. So he now has the combined power of his Psycho drive and the Dark Hado. This power for Bison is short lived as Akuma takes over Bison's Body form within. Even changing Bison's Appearance to his own.
Akuma now calling himself Shin Oni goes on a rampage killing EVERYTHING he comes across because the combined power of the Dark Hado and the Psycho Drive prevnets him from sensing the Dark Hado Power outside of his own. So he cannot find Ryu.
After the fight with Akuma Evil Ryu is weakened and Ryu is able to come back. He knows everything Evil Ryu has done and goes back to the states to pay for Evil Ryu's crimes. In his regular state he cannot sense the Psycho Dark Hado of Akuma and is unaware of what Shin-Oni has done.
Chun-li with an almost recovered Ken, find Ryu and they inform him of whats happening. They gather everyone they can find that is strong enough to battle even getting Sagat to Join their Cause.
Movie ends with this epic battle of Everyone Vs. Shin-Oni, it isnt easy for the SF gang as Shin-Oni can do everything Akuma and Bison can do and SO much more.

Think it would Work? Of course more detail would be included more fight scenes... But this is just the main points of the film...

Habataitara modorenai to itte
Mezashi-ta no wa aoi aoi ano sora