stealth_nsk
Deity
Just ensuring that the AI in Civ VI can move-and-shoot, and will spam the "right" units instead of the dreck they normally send would make a Diety AI significantly more formidable. Fighting the BNW AI with a few mods is already twice as difficult.
I'm pretty sure it will be able to move and shoot. Unit building priorities are not that obvious, although we could expect some improvements here. But it will still be not enough against human with some experience.