Yes, it's acceptable, and quite easily within the industry, albeit it's more often practiced with actors rather than director/producers.
1 - http://digitaldreamdoor.com/pages/movie-pages/name_mov.php
2 - http://en.wikipedia.org/wiki/Alan_Smithee
Why wouldn't you want your name to stand out?
OMG.I´m talking about me choosing my own nickname instead of using a generic one.
OMG.Did you seriously think all these people had names ASSIGNED to them?
YES!
Pick your own nom de plume!
http://thenamegenerator.com/
http://online-generator.com/name-generator/fake-name-generator.php
http://www.fakenamegenerator.com/
Can you see a respectable and renowned director/writer named Fernando Echeverria?
Would it work, to use a japanese pseudonym without being japanese. The first name spanish, the second name japanese.
I´m a very private guy and i dont want to link my family name to whatever is i end up doing
Changing your name is only one half of the solution, though.
To complete the transformation, you'll need this.