Adding a multi-level hierarchy in my Firefox bookmarks, and trying to add a bookmark in Windows/Scripting, I have to make at least 4 mouse clicks. It should be less. (Via drag & drop into the bookmark menu it’s just one click and a few mouse moves, which is okay.)
Likewise, setting the URL currently displayed as the start page requires 4 clicks. It could be less, for example the right click context menu could have an entry “Set as start page”.
Counting the number of clicks seems like a very useful and yet efficient way to check how well a user interface has been designed.
However in order to fix the click-count problem don’t make the mistake to mindlessly exchange a large number of clicks with a large number of immediately accessible GUI controls, because that can also be a sign of bad user interface design (last but not least because of clutter on the GUI).