I think he should decide if he wants to start again as an artist, or stay a personality, which he has been for years and years now. He says 'he's done it all', and that he has nothing left to prove.
If that's the case, throw in the towel, and don't say 'there's more to come from Michael Jackson', or things like, 'shock the world' and 'you ain't seen nothing yet'. It promises something, and when time and time again nothing comes from it, it's one big dissappointment.
So basicly that's it I think. He has to decide what he wants. Not promising stuff and not delivering. And making his mind up about his future. If that is that he only wants to be a father, so be it. I have beautiful music and dvd's to remember what it was like.
If it is making a new cd... better make it a good one, and do a tour. Because if he wants to be remembered as an artist, he'd better take some action. Because now the majority of the public sees him as odd at best, a freak at worst. (don't shoot the messenger)