As the title says, I'm thinking of a new campaign concept. If it's already invented, hit me. Anyways, here it is:
CAMPAIGN: ATTRITION
The campaign is played by two opposing factions of the Warhammer world, for example Empire VS Dark Elves. Each of the four players in their own faction makes an army list (variants of the same are allowed, e.g. one using standard and one CoU Empire).
1. Playing:
Each player plays a battle against an opponent from the enemy faction. The battle is otherwise a pitched battle, but victory points are not counted. Rather, the battle ends after the 6 turns, with no player technically "winning" the battle. Rather, every model that has fallen or fled off the table is permanently lost for the remainder of the campaign. Units losing models will start future battles with the number of models they had at the end of the earlier battle, you get the point.
If a general dies, the controller of the army may appoint a new general among characters tied for the highest Ld. A battle standard bearer may only be the general in case he is the only character left in the army.
2. Consolidating:
After each battle, each player merges armies with another randomly determined one from their faction, forming a new army for all purposes (which might become illegal due to going beyond your choices, but nevermind). The new army will be commanded by the one of the two players whose general has the highest Ld. If tied, the player with the highest remaining number of points in the army gets to take command. The other one plays to further part in the campaign, but may obviously whine and moan over getting displaced.
An army can only have one BSB. If both armies have one, the controller of the new army has to choose which one to use as BSB in each battle. The other BSB simply counts as a hero with a unit standard, giving his usual +1 CR as well as the effects of any magical standard, though he does not confer the ability to re-roll break tests. However, should the BSB in charge get slain, the inactive BSB will be able to act as the army BSB in further battles.
After merging the armies into one, return to point 1 and play on, unless there is only one army left in both factions, in which case proceed to point 3 below.
3. The final battle:
After many bloody battles, the remaining forces of both factions have gathered for a final battle. This battle is played with the deployment of pitched battles, but has no time limit. The game ends when either army is completely destroyed or having ran off the table, and the surviving team stand victorious.