well ... I'd still personally like to see (not in release but maybe a mod) large battles where Each individual soldier is a separate object.
Basically, while the unit is bought together, trains together, and moves together ... each soldier is a separate object with its own attack, defense, and HP.
So even a giant force of 1000 peasants, separated into 10 units of 100, cannot attack ALL AT ONCE with all 100 peasants ... instead the peasants attack one at a time once they come within combat range of an enemy.
So if ur fighting vs Pikemen you will be attacked by 2-3 rows of pikes, and if ur fighting vs daggers you will be attacked by 1 row of daggers, and likely only 1 or two daggers if ur a single person.
equally, if you attacked the rear or flank of a phalanx formation you would be attacked by less enemies than if you attacked them in the front ... due to the lack of flexibility of the formation.
Meanwhile, a mob is weaker but has no proper flank, and attacking from the rear won't confer any advantages other than lowering the enemy's morale.
// While a Phalanx is a stronger formation and increases morale, yet it cannot do as much damage to enemies attacking from the flank or the rear ... do turn the whole formation would take a "movement point" or in other words 1 combat speed/ combat round.