The “rotation” would be a very difficult manoeuvre on the battlefield
maybe allow the rotation to fail just like walking away from the foe’s face without using “footwork” perk. so even the rotation has become a early perk, in order to execute it safely, your brother may still need to use it with a later perk.
and yes, i agree with you about the AI, sometimes raiders use rotation makes them lost the chance to kill my second row guy(those who has a pole-arm) or waste half of their action point(those who have a range weapon in hand after been engaged would rotate and switch the weapon to melee in a same turn).
