The one positive side of the Republicans getting the House is that now they will actually have to do something. No longer can they just sit back and be the opposition to everything Obama and the Dems are trying to do.
Don't bet on it. Their game plan is to stop everything until the 2012 presidential election. McConnell is on record saying as much. It's incredibly irresponsible. Expect their first "deficit reduction" effort to involve a huge tax cut for the top 10% of income earners and increased defense spending.
Cause of how well that got rid of deficits in the 1980s