Nintendo’s Circle Pad Pro attachment for the 3DS seemed, when it was first revealed, to be something of a panic move, made in response to the handheld’s then-poor sales and the positive reception received by the competing PlayStation Vita (much of which centred around its two wonderful thumbsticks).
https://lastchance.cc/theres-more-to-learn-about-nintendos-ugly-3ds-add-on-5837871%3C/a%3E%3C/p%3E
Monster Hunter 3G was announced in September 2011, and the attachment went on sale in Japan in December 2011. The 3DS itself only went on sale in Feb/Mar 2011.
If Sakurai is telling the truth (and the way he hedges why the Circle Pad Pro doesn’t really help Uprising’s controls suggests he is), shouldn’t he have been told? I mean, he’s a Nintendo legend, working on a game (with a 3D camera!) for a Nintendo-owned studio that would seem ideal for the peripheral. The fact he’s saying this seems insane.
Either Nintendo’s internal communications are woeful, or they threw this thing together real fast.