Personally I’d like a feature which allowed the home button to be used to be the home of the particular site that you’re on. The website developers could set it themselves in the html. Then if you’re deep in some site you could press home to go there (or some kind of keyboard shortcut). It’s much more often the place that I want to go.
I don’t even actually have a home button set, I just have a blank page. But for those that do actually want their browser to go somewhere when they start they should be able to set a start page too.