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Protocol Zero AFAIK, there's an addon called Keymap Editor in the official repo that's supposed to give some kind of GUI for mapping key presses. I don't know any details, but I believe you can use that to edit your keymap without fiddling with the xml files directly. The menu uses a property as a trigger, so I guess if you were to input SetProperty(quicknavsetup ,1 ,home) and bind it to a key, it should work?
You don't need to use anything special to lock views. The skin already has a locking mechanism for media types, so you can lock in separate views for films, TV Shows, Seasons, Episodes, etc... When you go to, say, Movies, go into the views menu and select your preferred view type. Then open the selector again. You'll see a button "Lock View (Movies)" on the right side - pressing that will lock the currently applied view type for all movie browsing situations.
Note that you'll have to do this separately for every media type you want to lock in. I'm not sure if this will conflict with whatever is forcing banners upon you. These things can be very stubborn to ferret out. I'd advise you to go through your add-ons (heck, even skins) and go through the settings to make sure none of them are set to force a view. I presume Eminence's locking mechanic will prevail either way, but you never know.
Also, note that this method is dependent upon everything, including add-ons, declaring the content type, as they should. The skin
will get confused if the add-on doesn't provide it with information it expects, because it won't know what views to assign it. There have been many cases of sloppy add-ons like that that just wouldn't open in Eminence. Locking views might exacerbate the issue (it might not, though, depending on what you use).
Heh, to be fair, sometimes it takes me a couple of days to sit down and write out a response to everybody, and I'm pretty sure every once in a while I just a post or two. I guess you've caught me in my element. Anyway, thanks for the kind words. Feel free to chime in if you have any more questions.