Honestly yes, a device like the one in the article might get a Kickstarter or Indiegogo one day, but it will either be too expensive for what it is, or it will fall short of the list of OP’s desired features.
They're also working on a new device that is more sysadmin oriented.
the success of the openpandora[1] demonstrated without a doubt that as long there is demand for a specialized hardware based upon having a real keyboard then it is possible to successfully sell, and now the pyra[2] is following.
I would not be happy with your HP Elite, a convertible is definetely not suitable for any serious work, lacking an ethernet port is a no go.
[1]: https://www.openpandora.org/ [2]: https://pyra-handheld.com/boards/pages/pyra/
I guess it depends on one’s definition of “serious work”. I do just fine with a USB3 -> Gigabit adapter the three or so times a year I actually need it. In turn, I could never get any “serious work” done on your Pandora’s tiny 5” screen. My device suits my workload perfectly. :-)
Using it as a laptop I get 12+ hours of battery life. It draws from the keyboard battery first, so you can run that dry and still have 5 to 6 hours of battery in the tablet, making it an all day machine. It's only slightly bigger than my last convertible, an ASUS Transformer Pad, and much more powerful.
It doesn't have the wide range of ports in this article, but then nothing out there does. If I need VGA/DVI/HDMI I can carry a DisplayPort cable with those ends, and if I need Ethernet I can carry a USB3 to Gigabit adapter. Both would fit in the slim case I kept from the Transformer.