EDIT by Patrick:
remaining todo, see post: XFCE theming - a few suggestions
The default debian XFCE theme looks quite ugly and outdated.
However XFCE allows for quick and easy customization that can make this DE looks both beautiful and modern.
Here are a few easy tips that can help XFCE feel more modern and practical for Whonix users:
- Replace the default program list with Whisker-Menu (already implemented as of Whonix 14)
xfce4-goodieswhich provides panel plugins and small packages that improve user-friendliness (more details here: https://packages.debian.org/stretch/xfce4-goodies)
- Add Pulse Audio plugin in the panel -> users expect to be able to change sound volume easily
- Overall look and design
Enhance XFCE-terminal look (change default colors, maybe add partial transparence), as default white on black looks ugly and old
Change the general theme (also applies to windows manager) to something more modern and polished. A good example that often comes is the Arc theme: https://github.com/horst3180/arc-theme, looks like this:
Same thing with icons. Again, arc icons are beautiful and often recommended, but there are many others: https://github.com/horst3180/arc-icon-theme