I think a fantasic feature would be a Generative AI Fill Flash. This would be subject detection, then producing a fill flash effect on the subject. Bonus points if you can opt in to adding catch lights to eyes and "brighten" them up.
Mirrorless cameras have great dynamic range and some don't come with a built in flashes (Nikon Z6 and up). I rarely use my external flash due to the dynamic range of my Nikons and many venues don't allow flashes. However, it is teadious to do subject detection then tweak the light settings. I think this feature would be like a "digital" flash.