Are the freshman Congress members planning the US Government's economy - or trying to figure out how to pay the bills left over by the former Congress?How is that a good thing? You want amateurs to plan the US government's economy?
Do you go to someone who's not a career stock broker for your investment advice?
Part of the rationale of a representative democracy is that you elect someone with expertise to devote all of their time to running the government instead of something like a direct democracy where you'd have to vote on these individual bills and you'd have to find the time to research all of these issues in your spare time.
Aside from that, how do you know that they're not career politicians. Every Congressman had to start somewhere with no experience. If they were good enough to get re-elected, then they became career politicians. If they weren't, they had to give up politics and go into some other career.
In other words, you don't know whether they're career politicians until they've had a chance to show how competent or incompetent they were. Non-career politician is just one that was really bad at his job.
Being a freshman Congressman is no sin. But, usually, a freshman Congressman tries to learn the ropes before deciding they're qualified to take control of Congress.
The results of the 2010 election were very clear - they were sent to Washington to cut spending. Now, they need to learn when to take a win and move on to the next battle.