This is actually a hack that I’ve tested in a couple of my online games and, in fact, I’ve written about this on my other blog. But my old blog is tired and cumbersome and mostly cruft and I’m in the process of streamlining a little bit. Overcoming the inertia, if you will.
Anyways, so here’s how it works:
One-handed weapons deal d6 damage.
Two-handed weapons deal d8 damage.
If you’re a Barbarian, Fighter, Paladin, or Ranger, you step up the die size for each type of weapon. That is, you use a d8 for one-handed weapons and a d10 for two-handed weapons.
If the weapon is Light or Finesse, step down the size by one. A d4 for one-handed weapons and a d6 for two-handed weapons.
(Light weapons can be used in the off-hand, for dual-wielders, and can be thrown. Finesse weapons use Dexterity to attack rather than Strength.)
A weapon’s broad type also grants an additional bonus:
Swords crit on an attack roll of 19-20.
Axes step up their damage dice on a crit.
Blunt weapons stun (victim must save vs DC of 10 + damage dealt)
And that’s it, really. If you’re a warrior, everything in your hands is more deadly. You’ll want an axe if you care about critical damage, a blunt weapon if you want to disable somebody, and a sword if you want to critically strike more often.