Or that instead of spending millions to get a cast , train them for months and still wind up doing a crapload of their stunts with CG doubles , they might as well do the whole thing as an CG animated movie. Not saying that every blockbuster needs that but i do think that it works better with something like DBZ.
Especially the flying scenes anyway. Purists ***** and moan on how flying scenes can be done better with cables and wires and green screens but the reality is that those scenes are better with the use of CGI.
Not only that but actors need months to learn martial scenes. ONe option would be to cast actors who have martial acrts experience but those are mostly the people who can't act. So one hand you'll can have actors who aren't martial artists and wind learning the stuff but in the end still never get the movement as good as someone who's has mastered martial arts.
Whereas if you wind up casting actors who with martial arts experience you'll complain about them struggling with dialogue.
And instead of something that should make 200 million in the states alone , the movie wins up making as much as an average Jet Li movie makes in the states.
The argument that several directors who have shot their movies against blue screens ( like Cameron , like Lucas , like SNyder ) or made animated movies is that they want a level of control over what they are doing. They can't wait for hours till a cloud mves away in order to get perfect lighting or doing scenes like over and over because a blood squib didn't work well.
Get some quality actors , mo-cap their acting performances with stunts actors doing the fighting scenes . Hand over those shots to the VFX studio. Instead of training actors for 6 months , you can spend those 6 months working on VFX instead of shootng something live-action and then rushing to get the movie finished in time ( it's the case for the majority of all blockbusters out there).