Tylias Quill said:
Well, what about Power Attack? That's a common enough feat for melee fighters.
Okay, let's examine it (I have absolutely no idea what the results will be as I type this, by the way. It will be a surprise to me either way):
We'll check out Power Attacking for +1, +3, and +5, if that's okay with you.
Gary is normally +19/+14, so Power attacking for +1, he's +18/+13, Power attacking for +3, he's +16/+11, and Power attacking for +5, he's +14/+9.
His damage at +1:
2d6 + 15, 17-20/x2 = 26.4
Damage at +3:
2d6 + 17, 17-20/x2 = 28.8
Damage at +5:
2d6 + 19, 17-20/x2 = 31.2
Opponent with AC 20
Gary Power attacking for +1 damage: Hits 95% of the time, hits 70% of the time = .95 * 26.4 + .7 * 26.4 = 43.56 damage
Gary Power attacking for +3 damage: Hits 85% of the time, hits 60% of the time = .85 * 28.8 + .6 * 28.8 = 41.76 damage
Gary Power attacking for +5 damage: Hits 75% of the time, hits 50% of the time = .75 * 31.2 + .5 * 31.2 = 39 damage.
(Gary not power attacking still equals 42.84 damage per round)
(Bob at his least advantageous equals 34.03 damage per round)
Opponent with AC 25
Gary Power attacking for +1 damage: Hits 70% of the time, hits 45% of the time = .7 * 26.4 + .45 * 26.4 = 30.36 damage
Gary Power attacking for +3 damage: Hits 60% of the time, hits 35% of the time = .6 * 28.8 + .35 * 28.8 = 27.36 damage
Gary Power attacking for +5 damage: Hits 50% of the time, hits 25% of the time = .5 * 31.2 + .25 * 31.2 = 23.4 damage
(Gary not power attacking still equals 31.5 damage per round)
(Bob in his worst-case scenario does 27.09 damage per round)
For Gary, then, who has a high base damage, Power Attacking is not very useful unless he's fighting extremely low AC creatures. Someone who had a lower base damage would benefit more from Power Attacks.