Submit materials, getting specific about a hook...how and where exactly? In the old days you would mail them a press packet, and they would at least watch 10 minutes of your film.
Most of the online forms ask for 25 word synopsis and then a longer version and there isn't always a place to talk about audience engagement or whatever nonsense they're talking about. What they're admitting in a roundabout way, is that the worst way to get into a festival is to submit it to them using their process, on deadline, and pay their fee.
The industry standard for festival programmers is to work without ethics or regard for finding the best films available to them.
MacArthur just represents the death of another gatekeeper that did about as much harm as they did good.
Thanks to technology, we no longer limit the idea of, and ideas in, Documentary work, as it had been for the generation that relied on funding sources like MacArthur.