[Feature Request] Main menu background customization

Hello,

I would like to request an option to customize the main menu background.

Similar to StarCraft II, players could choose from a selection of available backgrounds in the settings menu. Age of Empires IV already has plenty of suitable artwork that could be used for this, including civilization-themed backgrounds such as the ones featured in Steam Trading Cards.

This would be a simple cosmetic customization feature that would make the main menu feel more personal. Players could choose a background for their favorite civilization, keep the default background, or use a random option.

Thank you.