When I tested out playing KOTOR 2 to see if I could get widescreen tweaks to work (got it to work eventually), I saw that for the inventory screen on the prologue level that the interface for KOTOR 2 actually scaled up to full screen even with a widescreen resolution in use. For KOTOR 1 however, things like the inventory screen, Pazaak games, the work bench screen, and basically anything else that wasn't the live in-game screen including the main menu are basically fitted in a 640x480 screen in the middle (I'm assuming 640x480 anyway), with a metallic border filling up the rest of the screen (I'm assuming in my case a mod is what's filling that with something so it isn't a bunch of blank screen). Now since I'm playing the game on an HDTV screen which is good for widescreen I prefer the HD resolution (looks much better than when I played the game on Xbox), and the menus are still very legible for me since I'm on the couch with a bigger screen to look at.
Since the menus and stuff still don't fill out the screen like KOTOR 2 does though, it's still an eyesore in a sense, and I'm thinking of recording gameplay footage and posting it to Youtube but the small screens for inventory and stuff may be harder to read for those with smaller displays. I looked on places like here, The Nexus, and ModDB but didn't find a mod which helped those various menus and screens scale up to fill the whole screen. Does such a mod exist currently, or is one currently in development? Or is it a feature that would be impossible to implement without official support? I'd like to at least have my inventory and level up screens not in a smaller box compared to the rest of the game, and playing Pazaak filling out the whole screen would be great for the cosmetic mod I'm using for that too to view it better.
Edit: Thought I should add some screencapture images to illustrate what I mean. These first few are of KOTOR 1 in the menus and screens that don't scale up to fit the screen.
Here's an in-game image from KOTOR 1 where everything displays and fills up the screen in widescreen resolution, unlike the various menus I posted screens of earlier.
Here's some quick screencaps from KOTOR 2 playing in widescreen 1920x1080 for me, the same resolution that KOTOR 1 is playing at. As you can see, the menus and UI of things like the inventory/character screen for this game scale up to fill the screen unlike KOTOR 1.