I install a lot of computers with KDE/Kubuntu
I have to change many settings/selecting alternatives/ positioning panels, configuring views for dolphin, 
setting up quicklaunch with shortcuts to websites
changing settings to make the session start clean on reboot so people can clear errors by restarting.

Basically, I'm hoping to help build a packaging for /etc/skel, adjusting many settings all at once for many users on a system that is already deployed, and 

I know KDE has immutable settings for some settings, ability to set default settings, and such, but managing them is hard because of binary blobs in the /home/user/.config/kde and not being able to just copy it to /etc/skel as expected, editing config files is not fun to do repeatedly, and I would like users to be able to select from multiple refined and considered configurations, but mine to be the default on systems that I deploy.

I imagine the tool to be able to change their own users settings for themselves, but a sysadmin being able to run a command line command to apply a package to skel, and possibly set immutable settings.

This is also a key component for running kiosks, as I need to lock down many things for kiosks, so I imagine someone to be able to manage kiosk users from this tool.