So your solution to out of control government is to give them more control, which you admit would be useless.
The whole point of going back to the original framework is to keep politics local. The 17th amendment essentially nationalized the selection of Senators when it used to be much more of a local state thing.
And money is much less important in local elections for your legislative rep and state senator who would in turn select the US Senator. So to buy a US Senate position requires that you buy the majority of legislators.
This of course makes it astronomically more expensive and with a much lower potential for success for the money interests.
Not at all... Local elections are better than Federalizing it but it still boils down to money - even though you seem to not recognize that fact. Keeping politics local is a grand idea but it still remains that money rules (local or state, or federal). Such is life!