Oooohhh...vitality/wounds for D&D? Very cool! NOW we are talking about some hardcore grittier gaming. I have toyed with the idea before, but I did not want to do the work of adjusting Threat Ranges and such for all of the weapons in the system. Hopefully they will have a quick and easy way of handling this.
Dungeon Master: The red dragon arcs his neck, lunging for Sir Grand Duke Epic Warrior of All Creation. You see the scorching hot bile within its mouth as his jaws part.....*roll*.....and his teeth gnash down about your torso.
Player of the High Level Fighter: *pales*...you mean..a critical hit?
DM: Yup. I hope you have more than 43 wound points [or whatever one is the most critical; I cannot remember which is more like hit points].
Player: WHAT?!? A single crit. will kill my character???
DM: Think about it; a shark can tear off a surfer's arm. A Red Dragon's head is the size of a TRUCK. Anything above your character's navel can now be found in the dragon's stomach. Everything waist-down....is now laying in a puddle of his own blood at the dragon's feet. Combat is deadly; now we have a game mechanic to further separate us form Diablo and EverKrack.