I like that the icon sizing is configurable in the preferences, as I think they're a bit too big by default.

But, to reduce the size of the icons, you need to increase the value of the "Reduce icon sizes" slider, which seems way too complicated and counter-intuitive. A simple "Icon size" slider with smaller icons to the left and bigger icons to the right is much easier to grok.

We'll see if we can enhance this.