What about something along these lines, combining ranged and close combat?
When you Engage in Combat, roll +Appropriate. On a 10+, you inflict a harm effect without receiving it, or inflict 2 and receive 1. On a 7-9, you and GM each choose a harm effect to inflict. On a miss, you receive without giving.
Harm Effects
Deal damage as established to a single target (if chosen multiple times, each selection after the first inflicts +1d6).
Divide damage evenly between multiple targets (if chosen multiple times, each selection after the first inflicts +1d6)..
Take away target's equipment.
Put a target in a worse position.
Take a dominating position.
Playbook specific moves could modify these options, possibly under certain conditions. Spend 1 ammo to gain 1 additional harm effect. When you select Deal Damage multiple times, add 1d8 instead of 1d6. If your Signature Weapon would be taken away, you may choose to suffer Damage rather than lose it. Etc.
Narratively, these options are of course restricted. If an archer is shooting at a charging goblin and rolls a 7-9, it's not appropriate for the goblin to deal damage, or take away the archer's bow. It is appropriate for the archer to lose ammo, or be put in a worse position by having a screaming goblin appear in his face, or for the goblin to reach some high ground where he can roll rocks down on the archer's head. If he were exchanging fire with a marksman, then Damage certainly would be on the table and maybe losing his weapon too.
I'm not sure why the focus is so specific on a single blow against a single target. I mean, narratively "The captain of the guard and I fence for a few seconds as I drive him back down the stairs." is an extended exchange of blows, but still a single narrative action. And "I swing my claymore in through the tightly packed goblins, cutting through six squalling little bodies with a single blow." would be one blow, many targets.