Its probably more than just a general UI tweak, but I would definitely recommend switching window managers/desktop environs from Gnome to Ion3. Its made to be

Its probably more than just a general UI tweak, but I would definitely recommend switching window managers/desktop environs from Gnome to Ion3. Its made to be navigable with only the keyboard(you can use the mouse, but you don't need it). I find it makes me a lot more productive - makes switching between lots of windows very easy.