Hey there!
I just wanted to say-- as simple a concept as it is, it's an incredibly fun and interesting way to compare experiences and gender with the folks!
Being genderfluid AFAB enby, there were definitely some eyebrows, laughs, philosophy, and cultural deconstruction that happened between cis and trans friends alike.
I plan on doing a "gender swapped" version of this with my little sibling who's starting to figure out they might be transfemme, and we talk about and compare our experiences. (They're AMAB, and I want to try and talk about some experiences, culture, and expectations they might have to face on their own journey.)
Actually, something I thought would make it easier and elevate the experience is if you're able to take those clear plastic paper covers, and everyone does their own-- then when you all group up, you all overlay them together or at a time and everyone draws on top with visibility!
Anyways, sorry for the long message, but this was a really neat exercise to share with the world! Love it!