We really don't know what anyone running for office will do, and the more people that have to vote for a person the more likely it is that many of them actually know much about him/her.

Once a person becomes a member of Congress it's even more difficult because of all the political trickery that Congress uses to divert attention from what they are actually doing.

We pretty much know the kinds of things that professional politicians will do. That is why the founders tried to set up a government of the people. The idea was to have everyday citizens go to Washington for a short time to represent a constituency. That person would go back to their jobs after their term of service was over. The founders never wanted people to spend their lives in government.