Yes, I think Obama will try to be more aggressive in the next debate.
However, if Gov Romney remains cool and calm and answers with reasonable facts and statements, Obama will become rattled. He has never had anybody truly confront him in the three plus years since his matriculation. He'll do his little nose-up-in-the-air bit that makes him look like an angry little child who's above it all.
And, as he seem not to know how many states there area, or the size of the National Debt, or what actually went on in Libya, or any one of a thousand other things a chief executive should know, he'll get mad and show it. He'll pout and roll out the old Democrat playbook to blame everybody else but himself.
I don't think the governor has to do anything different than last time. We all know Obama will try to throw the 47% at him over and over so all he has to do is provide a factual and calm rebuttal.