Visual customisation
Even beginners have ideas about how things should look and work.
There’s a smoothness to the way that the Gnome 3 customisation options are operated in Ubuntu. Once you are in the Appearance settings dialog, some of the (clearly worded) options lead to other dialogs. However, by the standards of a typical Linux desktop, the options for customisation are somewhat limited in Ubuntu. In particular, there is no easy way of making detailed font selections or customising the theme.