Beylik Janissary Musketeers are not given Platoon fire in Late-era custom battles.

Line infantry and elite infantry do not use rank fire and platoon fire when defending against frontal cavalry attacks. Instead, only the front row fires. I understand how this could be superior to platoon fire, but this is strictly inferior to rank fire.

Lancers sometimes still charge with their lances held in the air shortly before impact.

Gorodskiye Streltsy still deal death blows with the blunt end of their 2h axes.

If you order a melee infantry unit to attack a pikemen unit in custom battle mode, the pikemen unit will walk back a bit and then form a pikewall...in the opposite direction of the enemy.