The Senate does not represent the country well. California has two senators, so does Wyoming.
The next two years will be gridlock. It's unlikely Democrats retake the House and get sixty seats in the Senate, so divided government is what we have to look forward to.
The Senate is a strong architectural advantage for Conservative politics in the US.
This situation is unlikely to change. It would take a constitutional amendment to abolish the Senate and that is nigh impossible in the US.
Because of this big change only happens once a generation or so.