I think the most probable succession plan is to put Tim Cook in charge of the company with Ive in charge of design and aesthetics. Who has what job title is hard to predict.
"Hey virtual Steve, should we add this feature?"
"Get rid of it."
"Should we keep this feature?"
"Get rid of it."
"What do you think about--"
"That's shit."
I just bought virtualsteve.com, but didn't have time to set up hosting for it, so I've just put the page here for the moment.