have you seen the leaked pic of oozaru? lol
not good
The question isn't whether it can be done or not, the question is would idiots start calling it Nazi propaganda when somebody turns Aryan to achieve godlike power? I'm not too worried about white Goku or a likely white Vegeta, but a half Asian Gohan might raise a few eyebrows.
An anime could get away with alot of un-PC stuff (I'm looking at you, Mr. Popo) by attributing it to a "Oh, those wacky foreigners! We'll let it slide because of culture differences." mentality on behalf of American distributors. But when a major American studio does it, they're open to all sorts of criticism.
I say a wig then CGI to make it look better
So your saying that because Gohan will be half american/half asian with god-like powers that it could be taken offensively?
Technically half Caucasian Saiyen/half Asian. But no, I'm saying that in all likelihood, Gohan would look predominantly Asian as do most kids of such a mixed parental heritage. I'm also saying that there's bound to be a group of overly PC morons who'd be offended by the idea that IN ORDER TO ACHIEVE GODLIKE POWER, an Asian looking character must develop the physical characteristics Hitler defined as the attributes of a superior race.