Twilight:2000 as Applied to 3.x

[3catcircus]

I'm thinking of adapting either the Twilight:2000 v2.2 or Twilight:2013 hit point/damage system to 3.x.

Basics:

You have a "base" hit point value that is dependent upon your physical strength and health (some combination of the equivalent of Str and Con) that does not change with increased levels.

You have wound thresholds that are dependent upon multiples of your base hit point value, and it is location dependent (i.e. your arm has a different threshold for what constitutes a serious wound than your head or your chest).

Each level of wounds decreases your effectiveness (penalties to taking actions) and has the possibility of causing you to go unconscious, into shock, or bleed out. In addition, a critical wound, for example, to a limb has a chance of causing amputation (think of your arm hanging by a thread after a particularly-devastating swing of a sword or axe). The more serious wounds to your head or torso can cause automatic unconsciousness or even death.

I'd probably have to adopt the idea of subtracting an amount of damage equal to your armor value.

Without getting into the specifics, I'd first like to get some feedback on the merits of using such a system. Note that I've looked at the injury system in UA and find it lacking.