http://imgur.com/a/hcp6S
First an early overview and collection of ideas I had:
http://i.imgur.com/G6eQZ.png
And here a few mockups done in illustrator. If someone is interested I clean up the files and upload the .ai or .svg for you to modify.
http://i.imgur.com/7JSuu.jpg
A normal inventory list view. Basically just the vanilla with more info and font size, etc. somewhat adjusted.
In the bottom bar, between the key descriptions and the character info, you could place buff/effect symbols that reveal more info on hover or take you directly to the corresponding magic screen on double click.
below armor rating, carry weight, etc, there still would be space for name, race, and level.
And I forgot another thing that would be very usefiul. Sorting items by "value per weight". Showing base damage and effects in the list might not be necessary. Ideally you would be able to right-click the sorting panel and choose for yourself which categories to dispaly, akin to windows explorer's detail view. The item view column on the right would scale accordingly. Oh and mouse drag rotates the object.
Next, the same window, switched to view the character, just as in oblivion.
http://i.imgur.com/HY1fw.jpg
I think it is great to view items as thumbnails/icons so I did a thumbnail view:
http://i.imgur.com/HuHJy.jpg
hover over an item to display information. Scrollable list. It would probably be great if you could change the size of the thumbnails (+ and -? ctrl scolling?)
I added a scroll bar as well. Don't know if it's really necessary.
http://i.imgur.com/NGtEm.jpg
Lastly a mockup of the skills window. at 1920x1200, the screen is large enough to show all skills in one screen. Hover over name to get skill description, hover over perk node to get perk description, click node to activate perk.
I'm not sure how well that translates to lower resolutions but I believe at most you'd have to add another screen showing only three skills (with the one in the middle bigger) by clicking on the skill name.
Again, you'd hover over nodes to display information. No viewing single perks.
Some more notes on the first image I posted:
-It feels like the current UI lacks some consistency in the keybinds. Ideally there would be one button to confirm/yes/agree/etc and one to cancel/no and so on. Additionally to the mouse, of course.
-I think file managers and spreadsheet applications of the various operating systems should be our main source of inspiration, because they serve a very similar purpose and have beenimproved for quite some while. Additionally, people are used to them so it's very intuitive. Sorry if that's an too obvious point.
-the sketch shows another idea for the skill menu, but after doing the mockups I think PC resolutions don't need that. See above.
-Magic menu should just work like the inventory. it might even be worth thinking about merging the two. That is, adding the magic categories below the inventory categories. Though it's not really necessary and it will probably screw up looting/selling. I'm just throwing ideas out.
-right now the map isn't primarily a tool for orientation, but a quick travel menu. That fits within the game but eventually I'd like to do a mod that changes this. I'm working on a topographic map right now (just waiting for the CS to be released, and TESannwyn to be fixed for Skyrim so I can export the necessary information). So the notes on maps would only apply if you want to change Skyrim to be more about orienteering with a map.
Oh and for anyone wondering, the font Skyrim used is a commercial font called "Futura Condensed". I used another font in the mockups.