You are aware that the Founders provided for an Amendment process for things that didn’t work out or needed changing ? Hence why the 17th was ratified. Senators being elected by state legislators wasn’t working.
You keep using terms such as “unworkable” and “not working”. Please provide an example or two of that being the case at the time the 17th was ratified. The modern-day situations that you keep citing are quite possibly effects of having ratified it rather than reasons for doing so in the first place.
And, yes, in answer to your earlier question, I’m well aware of the amendment process. The ability to repeal mistakes is the reason that we don’t have Prohibition today. One amendment repealed an earlier mistaken one.