Can NOA be trusted to maintain that without direction from NCL? I'll admit I've got a pretty strong bias towards Japanese game development. Would we get more Metroid Prime or more Geist?
Yeah, that's the problem with giving NOA more power and leaving them alone. Since all of Nintendo's top game designers are in Japan, there's no guarantee NOA would be able to function right without them.
I mean just look at all the studio's that made good games when NCL designers help give them direction, vs what they make when they're left to do things alone. Factor 5, Silicon Knight, Rare and Next Level Games. All of these studio's made great games when they worked for Nintendo but without Nintendo they're hopless. Actually we should at Retro to the list since the studio was a complete mess until Miyamoto laid down the law which helped shape them to what they are today.
So yeah, NCL's total control over things can be a blessing and curse. On the one hand, NCL a lot of times is responsible for a lack of creativity that some of these studio's might have wanted. But on the other, NCL's control is what caused these studio's to be able to make great games in the first place. So if NOA was to be allowed to be it's own seperate entity, we might end up getting new IP games that appeal more to the American audience, but at the same time the quality of these games won't be anywhere close to the quality of games NCL is involved with since they'd lack the huge talent that NCL currently helps supply.