I think that at some point, the installer should display a window to choose the installation type:
- Installing the base system without a desktop environment
- Installing the KDE desktop environment on Wayland
- Installing the GnomeFlashback desktop environment on Wayland (gnome-flashback-desktop)
https://wiki.gnome.org/Projects/GnomeFlashback , gnome3 - with the gnome 2 look)A pretty decent desktop environment looks like gnome 2/mate, but there's gnome3, which is the latest technology on Wayland.It's worth going straight to the newer Wayland technology, since KDE and gnome support it and have been working well on it for a long time.
If you want to install KDE or another Windows desktop environment on X11/Xorg, choose the base system installation option, and after installation, you can install the desktop environment solution you want. And then nothing is imposed.
For beginners, there would be two graphical environments for Wayland;
for advanced users, only the base system would be installed, and after installing it, the advanced user could install whatever they want (X11 + KDE/Mate/Xfce/Cinammon/Openbox/Fluxbox/Other...).I also recommend that the installer offer at least two graphical environments for Wayland. One for QT enthusiasts – KDE, and the other for GTK enthusiasts – Gnome Flashback.
As a long-time Debian Linux user, I suggest taking a look at the Debian Linux installer and how it handles these installation steps. The installer gives the user a choice at each installation step. Initially, the installer allows the user to choose whether to run the installer in text/graphical/normal or expert mode, and then mix these modes, or choose other modes, such as rescue mode or chroot. Then, at each step of the installer, we have a choice, partitioning, and then what we want in the system: the base system or any additional graphical environments.