Hey Larian Studios! Congrats on getting Enhanced Edition out the door, loving all of the changes.
In the original release of Divinity: OS, you were able to edit a value in one of the .pak files for the main campaign to enable 4 players. Unfortunately it appears that the method no longer works in the Enhanced Edition.
FWIW, the value you could edit previously was
attribute id="NumPlayers". This was done via the following method:
https://steamcommunity.com/sharedfiles/filedetails/?id=280039791 using a hex editor.
I'd love to get the game up and running with a few friends by the time the weekend rolls around, so any input from the devs would be greatly appreciated!