I'm not sure why you think it's two clicks. You hit a direction, your map pops up. That's one click. If the inventory has the organized tabs that's the best outcome to me. I'm not sure why having to click a tab is a problem, it's much faster to click a tab and look at a specific set of items than have everything on one screen then have to search for the item through the clutter *cough* Morrowind *cough* it's just slower if everything is on one page, it's much quicker to find something if they are organized into tabs. Organized tabs are better in my opinion but that's how I feel about it.
I find it odd you won't answer the question but okay. But since you like Skyrim's UI(I think), well go with that. So you like one button hotkeys and agree with there inclusion in Skyrim for map,etc, yes I assume. You do like that there making more information available on screen because of the higher resolutions. And you don't like delays or load times after all you always recommend people to get SSD but you can tolerate a short load time, correct? I just want to know your opinion not what is in Skyrim right now but if you like whats in SR and think those were the right choices to make.
Did you ever use the DarnUI mod for OB, that had a grid system, but instead of the random clutter of MW(which also had icons,just not as many as darn), it had icons you could click on for item,weapons,etc that would collaspe or open that group of items. Like the keyring for Fallout. That way you would not have the clutter, could still find everything and it was all on one screen. But I do see reasons to go with a list view. I hope your right about the dial I read it as click to bring up a dial then, etc ,etc
Even if you did not use them mods like DarnUI were very popular.