Old thread died because half the players disappeared, though it was out of 8-10 players, and it kind of slowed down greatly, some missions got cut because of that.

Right now the player limit is pretty vague, but you can assume there is none. 

I expect once every few days if it's a normal length post or less, and if you're working on a collab with someone then a fair bit longer is reasonable. If you'll be gone for a long amount of time due to obligations or circumstances, I expect to be contacted and informed of this one way or another.