Arguably one of Japan's most recognisable developers, Kamiya has always insisted that he's a massive Nintendo fan, and he's clearly keen to be involved with the famous fighting game series:
Even if there's been discussion between me and Mr. Sakurai, obviously it's something I wouldn't be able to talk about. But I'm a Nintendo fan at heart. Even creating games with the Nintendo logo on them is really impactful for me. So if there was ever the opportunity to feature one of my characters in a Nintendo game, obviously I would be extremely honored.
As is customary when interviewing Kamiya, Polygon also asked about when he's making a new Star Fox game. Sadly, it would appear that all the recent pestering has gotten to the esteemed designer, as he replied:
I've been known for saying I want to work on Star Fox, but the tendency for this to spread and people constantly pestering me with questions, like 'How would you do this? How would you do that?' ... Quite frankly, I've decided I don't want to work on Star Fox anymore.
As one door opens, another shuts. We may see Bayonetta or Wonder-Red in Smash Bros., but the dream of a Kamiya-made Star Fox outing has faded — and it's all our fault.