Since there are no point values, I wonder how well the game would lend itself to a random army? You and your friends could say we're bringing X amount of warscrolls or models each. You could even decide okay, you can take between 1 and X warmachines, 1 and X monsters, X characters, and 1 and X troops. Then you randomly pick from warscrolls in those categories. Would be an interesting way to shake things up and get some kind of balance.
We kind of used to do that in historical games.