Same for me. KDE is so much better than Cinnamon. For Filemanagement, pcmanfm-qt (from LXQt) is the next best option. It is minimal, can be installed anywhere etc. Nemo lacks so many needed features.

For package management, a CLI upgrade from some old version of Mint to the current one worked kind of. But all the GUI stuff failed. I wrote a post about that.

And the desktop changed not a single bit. So many things that are missing, it is simply so traditional.

No the many KDE devs want the appreciation for their work, through Fedora offering the KDE variant as second workstation.

There will be 2 workstations. And I agree, even though I would prefer uBlue Kinoite as Workstation :D