Apologies if this is one that has been raised before, I searched but couldn't find it...
I would like to suggest showing "master" as a labelled branch in the Commits view.
In the Commits view (left-hand menu) and when All is selected, branches and tags are shown against their respective commits. It would be useful (to me at least) if "master" could also be shown as a label. Currently I have to either work out which is the latest commit that doesn't have a label, or I have to select master as the visible branch, find the commit history and then switch back to All and search for the commit ID.
I've left it at the default Major. I think it would it would be a useful change :)