I could set up something temporary for the jam, which might be nice - small and focused. But maybe it's better to direct people to one of the existing Godot servers? The official one is huge, 30k members or something. I dunno!
We have a room, #game-jams, that can be used to coordinate and collaborate, or just show off stuff. Threads are allowed there, so people can create sub-topics easily
I've thought about this, and I'm going to ask the official godot discord if they'll set up a channel for us temporarily! Will have details before the jam starts!