Quote Originally Posted by Silver Rusher
One thing that I would give anything for would be a diplomatic option that would enable you to coordinate battles with your allies. This would basically be to ensure the presence of large battles of alliances on the campaign map, which happened occasionally in MTW and almost never in RTW.

It would work simply. You would ask for one of your armies to be assisted in battle, at which point the allies would send an army to follow your one. When a battle is engaged, the army following the other one would automatically march towards the battle and join in. You would then be given control of your army, and the allies control of theirs.
I've been really hoping for something like this, and it really would make the game much better, much mroe enjoyable and tactical. ie. have an allied army chase an enemy army, whilst yours waits to ambush their path?!