Template like it's OS

If I want gnome for daily driver because like gnome, is there way to create template with gnome and then make it so gnome template runs full-screen with Qubes in the background?

I would prefer most things to be in Gnome and only like xfce because the Qubes specific features are not compatible with Gnome.

You can run a VNC server in your qube and connect to it to get the gnome desktop: