Aonuma's fine, I'd say he the one most trying to bring actual change to the Zelda formula. When he gets more freedom, we get daring shifts like Majora's Mask. When Miyamoto starts overbearing on the project is when we get OOT retreads like Twilight Princess.
I would like to see Koyzumi take over the handheld games again though (he directed Link's Awakening, now he runs EAD Tokyo). I'm tired of ships and trains. :/