I know it won't be an easy task and i often thought about what to include. So first step to take will be an rc-update GUI. This is one of the basics i think. As you know there are thousands of things which can be changed. Started by simple scripts to more advanced settings. So this GUI will be focus on things like the OpenRC system at the moment.
If a GUI is already available then there is no need to write a second one. Its maybe better to call this one out of the SCC(?)
Maybe the 'sabutil' could be included, cloned just used to gather Logfiles and play around with the config files.
But thats should be discussed elsewhere and (much) later.
A few words to the bashscripts:
They are fast written and can be changed in seconds without the need to even touch the GUI (more or less).
And yes i know i can't write a Qt GUI in bash

I won't include things like appearance settings and such because there is already a GUI for them in every DE. Maybe 'like Mandriva/Mageia' leads to missunderstand the goals of this project.
I'll write this thing even if there isn't any need or support for this because i can ^^