Ara, I just finished reading the article you referenced. Can you show me current (ten years or newer) blunders caused by the 17th Amendment (not the Senate)? That document is written in the context of 1913 and is mostly hyperbole.
For one thing unfunded mandates such as UHCR bill would never passed the Senate. Nor would Congress be able to bully the states into passing laws. If the states wanted to keep their funding (i.e. 21 for alcohol consumption or lose highway funding).