Thanks to @BonfireLadyfor introducing me to this concept.
The way I see it working is that someone starts a thread on a topic relating to trans rights vs women's rights. We could either agree the topic beforehand, or let the person responsible for starting the thread choose a topic.
Two or three posters with gender critical beliefs should play the role of someone with the opposite beliefs, and try to get really into character, imagining what arguments this person would make in response to the subject matter.
So for example, we could have a strident trans activist like Owen Jones, for example, a trans person, and someone who is coming at this from a "be kind" perspective.
Everyone who has not been allocated one of these roles should continue to argue from their own viewpoint, whatever it might be.
To make it more interesting, the thread starter could allocate people their roles by private message and everyone could change their username just for the thread so we don't know who is who.
Anyone game?