I tripped over this tantalizing little piece of something in the #nuvie IRC logs. Feast your eyes, Dragons and Dragonettes: Ultima 6 in glorious full-screen!
Here, minus the clipping.
As is explained in the discussion log, the gumps used here are all original artwork, and I would draw your attention to the backpack gump in particular. Note the implementation of a scrollable interface, which I would argue is a vast improvement over the tendency of backpacks in Ultima 7′s to become…cluttered. Yes, cluttered.
I’m told that the full-screen interface is available in the latest Nuvie snapshots, which for the time being (until I get the downloads sections rebuilt) I suggest you grab from the project website.