One thing that #KDE devs should seriously consider is an easy-to-use way to backup KDE settings/configs (Plasma + KDE apps). There are two main projects that I know of that are trying to do this, but since the config files are not all under `~/.config/`, there is a very high chance that these two cannot keep up with the sparsity of the config files.
https://github.com/Prayag2/konsave
https://gitlab.com/cscs/transfuse