If you want to go to your homepage, and this works under the Linux and Win version of FF ( I don't use a Mac ) hit Alt-Home as in the Home, End, etc. keys. One less keystroke.

First, you need three parties to have a middle.

Actually, no. If you click a link to a feed (starting with http) Safari does the "right thing." That is, it displays it with its feed format. It actually makes all of those little orange RSS buttons useful. In addition, "feed" is not an invented URI scheme. See here.