I think the offense will eventually come from Jonas, he's shown flashes and just needs to put everything together. While I'd like to see him be a bigger part of the offense, this year will end up being good for his development. He's playing in competitive games and will soon get a taste of the playoffs.
One area which I hope he improves is his passing. Players like Noah and MGasol keep their teams' offense humming because they are such great passers for their position. Even incorporating more dribble hand-offs can go a long way in helping the offense become more efficient.