Basically: Go make small movies, then come back to Star Wars when he gets bored with that? 1980s all over again?
Still: For all the bitching I've done about the man, he was a big influence on my life. Not only was Star Wars (and Star Trek) escapes that I needed in a rough childhood, as I got older I grew to appreciate the man for his creative and business sense, as well as the contribution him and his companies have made to the industry.
As for who to take the regins: Filoni for the serious answer; the man has got the universe nailied.
Or
Katie Lucas for the lulz from the nerd rage and her fighting with people online.