Never being quite satisfied with how other companies have handled the mechanics of a Star Wars universe in various RPG systems, I've been long working on a conversion utilizing the rules of Pathfinder. With the rules for wound points and vigor points that are presented in the Ultimate Combat source book, I've decided to incorporate them as an analogue to the wounds and vitality point system presented in the d20 iteration by Wizards of the Coast.
I've been slightly tweaking the mechanics to my liking as I incorporate them. I've run into a bit of a snag, however. The rules for Constitution damage/drain/penalties stipulate that these losses never affect a character's Wounds Threshold. I'm looking to tweak this and create a slightly more punishing system, but I'm not entirely certain what the long range consequences of such a change could be.
My question is this. Was this stipulation included simply to prevent a character from becoming wounded from Con penalties? If that's the case, I'm not too worried about it. On the other hand, if there are other implications that would be carried by changing this that I'm not seeing, I would be happy if someone could point them out to me.