First, they don't have to do anything to increase taxes. All they've gotta do is let the Bush tax cuts expire in 08, as they're scheduled to do.
Second, I predict that the Dems will spend the next several years paying Big Labor off for their support. By the time they're done, the US economy will be a Mexican or EU style disaster. They are already trying to help Big Labor unionize Wal-Mart.
Big Labor destroys every industry it touches. Look at the railroads, the steel industry, Big 3 autos, textiles, furniture, and manufacturing in general. Even the education system.
I agree that what you are saying is what they WANT to do, but wanting to do something and actually doing it in Washington are two very different things.
Remember the Contract with America and 1994? The Pubbies came in fired up and with a mandate only to be quashed by the veto pen and countless obstructionary and stalling tactics.
Do you expect even a minority GOP to just roll over and play dead to the Donks?
At the end of the day the Rats will only be able to more effectively do nothing.
And, they will be able to investigate the adminstration.
In my opinion there are some things out there worthy of investigation - mostly regarding the allocation of resources and poor decision-making. Unfortuantely, my guess is they will focus on the moonbat conspiracies and Bush will employ all of the stalling tactics that Clinton perfected.
A RAT congress means gridlock and investigations. But it will also mean that the RATS will have to at least come up with some ideas and we all know that they have none.