&gt; I’m not certain a dramatic shift to the left is what is polling so hot on a national scale.

I don't understand what this means.  Together, Sanders and Warren have 40% of the Democrats naming them as their top choice.  [Source.](https://www.nytimes.com/interactive/2020/us/elections/democratic-polls.html)

&gt; Bernie and Warren are different sides of the same “burn it down” coin. 

They absolutely are not "burn it down" candidates, any more than FDR's New Deal was a "burn it down" policy.  Investing in America is the exact opposite of "burning it down."

&gt; We have a pretty stable country with a good economy, 

We are more polarized politically now than ever, for the first time since WW2 staring the specter of American fascism in its face, with greater wealth and income inequality than at any other time in human history, with warning signs we're on the brink of a global recession bigger than the one in 2008, and our international leadership and credibility is perhaps unrecoverable.  All while climate change breathes down our necks, threatening our very existence as a species.

I guess your definitions of "pretty stable" and "good economy" are vastly different from mine.

&gt; I find it much more reasonable to fix what we have instead of try to recreate something with very little thought or planning.

Good news!  Sanders and Warren, in consultation with experienced policy experts, have both released detailed plans on what they would like to fix and how.  We can rely on expertise to determine what needs to be changed and how, instead of doing it with very little thought or planning.