It certainly can have separate scroll directions between (in my case) trackball and touchpad. You have to download a free menubar widget to get it, but so what.

It certainly can have separate scroll directions between (in my case) trackball and touchpad. You have to download a free menubar widget to get it, but so what. This is in contrast to focus follows mouse, which you really can't do, and I wish it weren't so. In general though? The OS provides a lot of affordances for automation and customization, it exposes some of that through preferences and leaves the rest for developers. A good example is what you can do to the keyboard from System Preferences (which is quite a bit) vs. what you can do using Karabiner.