= Small mods that change the visuals =

Of course. As far as I remember, I didn't change the image width; I made changes to DialogueScreen.(WindowScreen).xdb ([ALIGN_SCREEN] and so on), DialoguePanel.(WindowSimple).xdb, and DialoguePanel.(WindowSimpleShared).xdb.
It's not that easy to explain; it's better to compare the mod's files with the original ones, experiment, and then you'll understand the file editing mechanism!

As they say, through trial and error. Thank you very much. I will definitely mention you in my work when such a pack is ready. But here's a question: how should those who play with a 4:3 aspect ratio handle this? Is it easier to create a separate mod, or what?
What do you think?

Added 4 minutes later
And another question. Does this work with the loading screens for Campaigns 1.6 and Lords of the North? I play these campaigns with the AllCampaignMod.h5u mod, which allows playing the vanilla game's campaigns and Lords of the North in the Warlords of the Horde.