I know that Zelda changed A LOT when Aonuma took over, and I expect a similar change to happen when someone new steps up to the plate.
Hopefully whoever that is will respect everything that Aonuma and Miyamoto have worked towards and will do his/her best to improve the franchise. I would understand if he/she made major changes in the games (i.e. threw out master timeline, worked with all new NPCs, etc), I only pray that they continue to turn out great games.