Yea, we won't use the Matched Play requirements of having Battleline units.
Actually here is all of the supplementary rules we'll use - Although the number of points for draw/wins may be subject to change:
STARTING A WARBAND
A Warband must consist of warscrolls from one(1) Grand Alliance.
Each Warband gets 300 points starting out.
Each Warband must compose of a minimum of 1 Hero and 3 Non-hero models, and a maximum of 1 Monster/Behemoth, Warmachine/Artillery and Hero per 300 points.
Named characters and Battallions are not used.
The leader of a Warband must be a Hero.
The leader can choose a (1) Command Trait. This trait is permanent, unless the Warband changes leader.
Each Warband have a (1) Battle Trait from the chosen Grand Alliance or a suitable Battletome.
Artefacts can be bought at 60 points, max. 1 artefact per Warband.
A Warband uses the Rewards table based on their Grand Alliance:
Grand Alliance: Destruction = Ironjaws
Grand Alliance: Death = Death
Grand Alliance: Chaos = Pick one from the Chaos tables
Grand Alliance: Order = Pick Stormcast, Seraphon or Fyreslayers
UNITS IN WARBANDS
When buying new units, you can buy single models for their individual price. Example: You can buy 3 Skeleton Warriors for 3/10 of the price of the Warscroll, even if the Warscroll notes that the minimum unit is 10. Prices are rounded off to nearest whole point.
If the Warband have units with less models than the Warscroll minimum, you have to fill those up before you can buy new units of the same kind - That is no duplicate 'under-strenght' units at a time.
If a unit contain less than the Warscroll minimum, none of the models counts as unit champion, but can still be musicians, carry banners etc.
UNDERDOG BONUS
Each Warband that have less than 40+ points of the opponent(s), can roll once (1) on the Triumph table. The effect from the table last only for one battle.
AFTER THE MATCH
After each battle each participating Warband gets 1d6 x10 points added to their Warband. If the battle was a draw participating Warbands can reroll their 1d6 once. If a Warband got a Minor Victory they get to roll 2d6 and pick the highest, and a Major Victory awards 2d6+3 and pick the highest.
A Warband can choose to pay 60 points to roll once (1) on a (1) Rewards table.
A Warband can save up points to a maximum of 300 points.
If a leader of a Warband died in battle, you can nominate a new leader (Must be Hero). It can be the same as before, or a new Hero. If a new Hero is chosen as leader, the leader can pick a new Command Trait.
BATTLEPLANS
Each Warband must win the Battleplan: The Monolith with a Major Victory to win the campaign.
Opponents agree with their opponents on what battleplan to play. If they cannot agree, roll 1d6 and the highest pick the Battleplan, the lowest roll get to pick sides.
If a Warband is 1 Glory point from winning the campaign, and have not yet won a Major Victory in the Battleplan: The Monolith, then the Battleplan is automatically 'The Monolith'.