Miyamoto really hasn't been the "go-to guy" of the Zelda series since he told the director to "do whatever he wanted" with the final battle in OoT. His way of working as a producer is to leave the designers alone, periodically evaluating their work, thus "upending of the tea-table." He does not usually linger very long on any one title at this point, and thus he cannot be considered a very good authority figure for any one of them.
As to what director I would want, I personally hope Fujibayashi is involved alongside Aonuma. The man's got style. Koizumi is currently working as a producer at EAD Tokyo making him an unlikely candidate, though he might still pitch in as a writer (he worked on the story of LA and MM, among others)... Probably not, though.
As for what Aonuma said; Great! I'm looking forward to it, Mr. Hype-san!
