I love that GenCon is continuing its online play every year. I ran a Fate / Dresden Files game in person (2014) and I've run a few CoC convention games. Running strangers in a game can present a unique challenge, but I think I'm going to try running a GenCon online game next year.
I did a 6 "column" write-up of my Dresden Files game including post-game thoughts (from both playtests and the actual game): https://www.attercap.net/post/dfrpg-the-mark-of-madness-1-of-6-adventure-notes/
I've done a lot of work on my unofficial Fate Core conversion of the Dark Crystal universe titled "War of the Dark Crystal" and with all that work, I've never actually run it. Wondering if that'd bring in enough GenCon Online players or if it's a little too "homebrew."
https://www.attercap.net/post/war-of-the-dark-crystal-intro-and-characters/