Exactly, you do that by installing Debian with KDE. Not by creating a new distro, which you do not have the resources to properly maintain, which is then perpetually broken in weird ways, which no user can figure out since the base distribution does not have the problems the completely understaffed maintainers introduced.

What all of these distros want to be is a basic configuration script. What they are is a nightmare for every user, since the user is now in the hands of a few people, who as a hobby are maintaining his OS and occasionally will break it.

It is so bizarre that so many people want to make distros, when they are completely unequipped up do so.