He should just take one of the scripts he's been workshopping and a bunch of nicely painted minis and just act it out on a table top. Call in some favors for some celebs, basically make it a WH40K version of something like Critical Role blended with a puppet show. I bet that would do pretty well and give everyone an idea of where he wants to go with the IP.
If he does it shirtless after a couple of weeks of prep I bet it will get 95% female viewers as well
If he does it shirtless after a couple of weeks of prep I bet it will get 95% female viewers as well