= Small mods that change the visuals =

I adjusted it to fit the edges when not in windowed mode and with maximum settings. If you look in windowed mode (4:3), the dialog boxes (where the text is) go beyond the edges, but the text itself and the button are displayed normally.
I don't know about other interfaces. You need to look at the mod structures.
Probably, it's possible. I didn't add anything extra, except for stretching (this is a resource from the game itself) the sand-colored bars to fit the full screen.