Enemy advancing in formations

[ster]

Some waves of enemies can advance in formations. Something like shield wall for infantry or wedge for cavalry. Just imagine advancing enemy wave with nord infantry in first line, sharpshooters and rangers on flanks, pikemans and deserters in second line and it is followed by devastating attack of nord shock cavalry in wedge formation, no more stupid bot rush, where archers cant shoot cause they cant see their target or enemy cavalry stuck in its own troops.
I think it will be really funny and interesting to fight against such waves.

P.S. As i remember there are very nice implementation of this behavior called Vicky, it was created for prophecy of pendor mod by treebeard.