It would be great to have a non-partisan source for aggregating public data-sets, performing professional analysis, and publishing visualizations; if that's where Steve Ballmer is ultimately intending to go with this....

I found a good article that summarizes some of the features not currently implemented in SQL Server for Linux.
https://redmondmag.com/Articles/2017/03/01/Open-but-Not-Equal.aspx

Here are a few that stand out,...

The licensing model is also important, especially if your organization has dozens or hundreds of instances to monitor.

My thinking is that there is a role for data science, but for most small, medium, and even large sized IT organizations; it would probably make more economic and practical...

I hear that McDonalds corporation is recruiting a Data Scientist. The new hire will share a corner office with their Nutritionist.

What you've described is essentially a slowly changing dimension. Take a look at Kimball's advice and patterns how to slowly changing dimensions.

http://www.kimballgroup.com/2008/09/slowly-changing-dimensions-part-2/

.. When developers ask about adopting MongoDB for certain applications, or for help setting up a CI process, is your stock answer to say "no", and to quote corporate...