I think it's kind of odd that people are picturing fantasy warrior archetypes as strong but not agile. The classic warrior protagonists seem to be generally athletic--equally strong and agile--while a few duelist types are more agile than strong, and only more brutish characters are more strong than agile. Really, the idea of raw strength being more important in armed melee combat than speed or precision seems more like a D&Dism to me than any kind of fiction emulation.
Bagpuss said:
Dex modify accuracy really only makes sense for light weapons which is already covered by Weapon Finesse. Decent Str is need to wield heavier weapons with any sort of control, it would still makes sense to have Strength add to attack in melee from a 'realism' angle even if armour didn't make you harder to hit.
It doesn't make a hell of a lot of sense to require a feat in order for one's agility and hand-eye coordination to influence their melee combat accuracy. Also, it doesn't make sense for their raw physical strength to ever influence melee combat accuracy with light or natural weapons.
The point about strength being necessary to swing a heavy object with any kind of control is a good one, though. I like the idea of heavier weapons imposing attack penalties on wielders with insufficient Strength scores, myself. Also, if you really want to go out of your way to reinforce archetypes, Strength requirements on armor would not be illogical.
On the other hand, I think I might actually
not use Dexterity for ranged attacks. Well, not for point-and-pull-the-trigger ranged attacks, anyway. Thrown weapons, sure. But projectiles and rays might actually run off Wisdom, in its rather half-assed capacity as a perception stat.