I don't know how much he will change. I personally think no change is better than change for the worse. That's why I prefer Obama over Romney. I think that Romney would not make changes better to an atheist.
We'll have to see what his cabinet shake up are to figure out what his intentions are. We'll have to see if Reid gets Filibuster Reform to see if anything is even possible. And although I suspect the GOP will continue to be obstructionist to any real progress, we'll have to see if Obama grows a pair and takes the fights public to get past that.
I suspect he won't get much done for the same reason he was compromised in his first term - lack of political courage. Or maybe he'll turn his attentions to foreign policy like many 2nd term presidents do.
The first thing he will focus on is the "fiscal cliff" that is looming due to the bush tax cuts and the other automatic cuts that were negotiated last year. There will be another dip and real recession if they don't.
Blame the republicans and Bush for everything. Play 102 golf days. Go on 42 more vacations with Michelle. Attend more Hollywood events and talk shows. Play more b-ball. Pretty much the same as the last 4 years. Oh and apologize to Iran for the drone, raise the debt ceiling, and spend another $4 Trillion.
He will change America for the worst. More taxes, more debt, less military , less jobs, more foodstamps, higher electric bills, less world respect, more whitehouse coverups , and the list gos on and on.