I have never had the same level of political confidence in the pre-17th Amendment universe that many, many Freepers have.
As far as I can see, most state legislatures have enthusiastically relinquished their 10th Amendment powers to the federal government.
Bottom Line - I am not confident that a U.S. Senate selected by state legislatures would be materially different from a Senate selected by popular votes.
Well, most people think the President should be popularly elected too.