Hello Baadvark,
Then You should look at those scripts to iterate maybe you can workout directly inside the scripts.
without adding new one and simpilize the codes (Not sure ? );
SCROLL_SCROLL_Resurrect_1.charScript (For changing Ressurect scroll ? )
GLO_Ghost.charScript,GLO_GhostOnDeath.charScript,GLO_PlayEffectOnDeath.itemScript( for unconsiouness adding ?)
GEN_Follower.charScript ( Remove dead from party ? )
Also we need to remove the died henchmen auto from party.
I have nearly finished auto lvl up vitality feature in mod however there can be some creatures
that are needed to be touched yet. Also if you want you can merge your bard mod with that one and you can publish it. You can create a new race called NecroMorph and add the skills there with for elf root template or maybe we can use another creature but many of them doesn't show some armor kinds.So have to look which one.
Also I balanced the skills in later version to be more challenging if you will become a god then you should have some different skills from others for single play.
Before talking about our project I want to say that ideas of course now coming directly to my mind as i am an experienced player with age of 40.Mercenary camp system idea is from a little Jagged Alliance series , Injury idea is from Tyranny or other kind of games (Many of them use this kind of stuff).
I don't have much time for creating scripts but if i have time i can help you with skills and exc. stuff as this is my hobby

Just help an old man to finish this stuff and publish it for me to play it

;
1-Permenant injury & dying project;
Your idea on constitution will work great with permenant injuries which way the character became unconsious also ; if unconsiouness by fire then injury f(permenant attribute debuff & sloweffect[in3rd injury before dying], -z (vitalityboost) ) style).
So our idea can work like below ;
Constitution is still giving HP to our chars to not die fastly but after 3 permenant injuries EVENT DeathSaveInit will work and will make a saving throw check like in the script.
Ressurcetion scroll name and script should be changed to maybe injury treatment scroll. ( What should we call it ?)
2-For the Mercenary Camp/Inn Project;
I don't think they will add the hireables section like we think. But you are right have to wait for the hireables section completed in game after that we can mod it