by David T. » Thu Feb 22, 2007 12:34 pm
Welcome to wikipedia, a bed of possibly correct, but possibly horribly incorrect statements. A sword that you will see at the renaissance faire will display the properties which you are thinking of.
There are many types of swords. I'm aware of the fact that a rapier is primarily piercing weapon as are most other swords (exceptions being the katana, saber, or other thick one edged swords which are almost exclusively used in hacking/slashing attacks due to the reasons they were created / armor they faced). The fact of the matter is, with what you typically refer to as a longsword, broadsword, bastard sword, shortsword, etc the most effective attack is a piercing attack. The types of armor that these weapons faced dictated that piercing attacks were more effective.
Think about it, typical materials armor was crafted with in the medieval time frame (aka pre-gunpowder):
Hardened Leather
Iron Studded Leather
Chain or Ring Mail
Plated Iron
You're dealing with a problem here. You are not going to slash through these types of materials with a sword whose breadth is approximately about the same as your index, middle and ring fingers (I seriously hope you have seen a sword that was actually around in the middle ages, they were rather thin bladed). A piercing attack would puncture hardened leather, maneuver around the studs in studded armor, have a better chance of doing any sort of damage vs mail armor and of course a thrust would allow you to pinpoint your attack against plated armor's weak points (they had em).
Swords used as slashing weapons had to be thick and more like cleavers. Sabers, Scimitars and Katanas fit this bill, but none are the swords that most people consider when thinking of swords (at least not in the western world).
Either way, this is incredibly off topic, I'll get back on track.
What you are suggesting serves only to complicate a game's play mechanics for simple (and unnecessary) flashyness. Whether you are standing next to or standing in front of someone you still have to duke it out blow for blow as any class that relies on melee capacity to win fights. My theory: when in doubt use the KISS principle ('Keep it sweet and simple' or 'Keep it simple, stupid' for those who don't know... I prefer the later of the two).