Well, you got the back/forward buttons in the right upper corner. If you just used Ctrl+Click then your hand is on the mouse already and you could just click that?
I.. uh.. didn't notice those : P Sorry.
I routinely navigate tes4edit with only the keyboard, though, and if it isn't too much trouble, some keyboard accessibility features would be nice:
1) change the tab order to: address bar, formid textbox, editorid textbox, left pane (record list), right pane (record details or whatever based on the selected tab), right pane tabs
2) make enter over a record element equivalent to double-clicking on it (e.g. show compare conflicts window)
3) make ctrl-enter equivalent to ctrl-click on a followable reference (maybe just tapping ctrl could underline all the followable links?)
4) alt-left equivalent to "back"
I'm sorry for not thinking of this earlier when the idea list was being drawn up...