Hi!
You should be able to install GNOME DE on Qubes OS dom0 with.
sudo qubes-dom0-update gnome-shell
Install extensions according to instructions here.
Install [email protected] and run this:
sudo cp ~/.local/share/gnome-shell/extensions/[email protected]/schemas/org.gnome.shell.extensions.pop-shell.gschema.xml /usr/share/glib-2.0/schemas/org.gnome.shell.extensions.pop-shell.gschema.xml && sudo glib-compile-schemas /usr/share/glib-2.0/schemas
Reload the shell with Alt + F2 and type r. Use the tiling widget in the panel to enable active window hint.
Then run label.sh to enable colored window borders. Thanks to the kind people in the Qubes forum who helped me with the script.
@kennethrrosen there are some Gnome Extensions for enabling showing legacy tray icons for quick access to the services you mentioned.
For example, here's the one that I use, called "AppIndicator and KStatusNotifierItem Support": https://extensions.gnome.org/extension/615/appindicator-support/