This graphic mod changes UI elements to look good on widescreen monitors. It's not perfect. There are compromises. But I like it better. I hope you will like it as well. If you do not enjoy it let me know what you do not like about it. I will utilize your positive criticism to make it better.

It's savegame compatible with Vanilla. So you can try your current campaign with new UI. To install simply copy widescreen folder from the archive to your RTW folder and add -mod:widescreen to the shortcut or launch options in steam. The mod is modfoldered, so no files will be altered.