Quote Originally Posted by Kish View Post
I think it's more a matter of "you can make attacks of opportunity because an enemy provokes them while close enough for you to attack them; if ranged weapons threaten attacks of opportunity then suddenly an enemy with a bow locks down the field and no one can move,"
This, mostly. I'm under the general impression that threatening an opponent means you're actually making low-effort attacks against that opponent outside the abstraction of the combat round, which your opponent avoids/blocks easily unless they're distracted; extending that to ranged weapons would require going through a lot of ammo every round...and no one wanted that much bookkeeping.