I liked Bertrand, but like swingerofbirch said, his accent was a bit hard to understand. Perhaps he should speak French instead - I could understand him perfectly then. Phil Schiller seems like a nice guy, but is not especially charismatic.
IMHO, Steve will continue for five or so years more, health permitting. Perhaps he'll quit when he's 60?
As for a successor, perhaps Bill Gates would be interested? He's giving up his role at Microsoft in a few years and will have plenty of free time.