Volkare's scenario seems good solo, but as a co-op game, we use one player as a wound soaker while the other player/-s kill some of his army.
Playing this way makes the game easy and no fun.
I was thinking about changing this a bit.
Everybody is dealt the same amount of enemies.
You do not choose how many enemies you want, they are distributed evenly to all players. First green/gray and then red/white.
When a player is knocked out and he still gets wounds he is eliminated (killed) after receiving twice as many wounds as his armour.
Or make it even lower - 4 wounds?
The city tile is far away - somewhere North/North-East.
It has to be placed as far North as possible. You can't go back!
You have now a bonus for rushing there.
Volkare's Return scenario can't be victorious without conquering the city.
You can capture Volkare first though.
I like also Chris' idea:Different enemies join Volkare