You going to mod in different dmg types with their own resistances and thresholds too?
If it's possible, I'd love to do something like that. Or even just normal DT/E-weapon DT/Concussive (ie 'splosive) DT/Flame DT. That might not be possible without some fairly intensive scripting that's beyond my skills.
To begin with though, I'm going to eliminate that "minimum damage bleedthrough" and later reintroduce DR to every armor set since that's still a field in the GECK. Armor that logically shouldn't provide protection, ie T-shirts, will get DR and have a DT of 0.
In fact, first thing I do is going to crack open the GECK and set the minimum damage bleedthrough on DT variable to 0, even before actually playing the game. Everything else will come later, once I've explored the new GECK and its inner workings.