I have, for as long as I know THE AI generation, using it to generate fan Gal Civ content. In particular, I liked to use it to make some propaganda, both in text and pictures. I am mainly using Chat GPT image generation. Here are a few examples:

Terran Resistance anti -Yor poster

A Phalanopid Advance war propaganda poster (I am curious, how did it knew what a Phalanoid is, as it is one of the new civs).

And a Drengin propaganda poster

And another Drengin propaganda poster.
This will be all for now. What do you think?