+1 here. I wanted to write the same. Silverblue/ uBlue in particular has a huge potential.
It already is extremely user friendly, but if someone could develop an even more “noob”-friendly version with a great welcome-starter that shows you how to install stuff, a good looking KDE rice, and sells it as extra-distro with it’s own website and iso, then it could easily replace Mint as the #1 best beginner distro!