Aside from the suggestion of requiring each particpant to describe his round of action, you could try an abstract "offense vs. defense" grid, and modify damage based on the results.
Something like:
Code:
Head
Left Chest Center Chest Right Chest
Left Gut Center Gut Right Gut
The defending player can choose to defend in three ways: (Head, Center Chest), (All Chest), or (All Gut). Alternatively, you could allow the Defender to choose one area to protect, plus one up-down adjacent area per point of Dex bonus.
The attacker can pick one area to attack. (Or you could allow the Attacker an additional area to attack -- not necessarily adjacent -- for every 2 points of Dex bonus.)
Attack rolls are as normal, but damage depends on the area's defense (and whether an undefended headshot hits).
Hitting a defended area, including the head -- Half damage
Hitting an undefended area, except the head -- Full damage
Hitting an undefended head -- Double damage
This can play out
very quickly, especially if you give the Attacker and Defender each a set of cards representing the various areas. I completely understand what's meant by the tedium of "attack, damage, attack damage," but I think I'd enjoy trying a boxing match with this.
BTW, the idea for this comes from my memory of the old Top Secret hand-to-hand fighting charts; I saw it again in the Highlander CCG. I'm sure it goes back before that, and probably exists in some supplement today. The specifics are mine, though.
If anybody tries it out, let me know.