Okay so there hasn't been an actually proposed one yet but I'm sure there will be quite a few.
This intends to be a quick to make mod to start out with, to add a realistic element to battles and to warm me up for larger mods. So if you're a fan of a reflection on reality when it comes to shooting things, you might like this.
Proposed Feature List:
First Version "Ballistics and Poisons":
Revamp Carry Weight System
Reduce All health for everything to reflect their actual survival rate against bullets. e.g. a humanoid could, at most, survive 2-3 shots in the head although in very rare circumstance, where as a thick skin Yao Guai Can take multiple to most limbs.
Remove V.A.N.S perk
Add in a new perk "Field Medic" to replace V.A.N.S.
That's it so far, in the future I will try to start calculating armor and melee weapons along with crippling rates.
After that, lasers.
Update: Because there is a weapon list I'm going to leave damage they do as it is and make everything work around that. So:
Features (TODO)
Pip-Boy:
Maps will have no markers given beyond that of locations, no quest or custom markers can be used.
Fast travel is removed.
Items:
Item 'Bandage' added.
Artillery Smoke Grenades Craftable.
Pipe Grenade Launcher.
Combat re-vamp:
A Critical shot will be considered a regular hit and quite rare. The rest of the time they will be "grazes" which will be flesh wounds and cause a damage decrease of about 10% (minimum 1 damage)
Shotguns will have a much larger spread.
Weapons:
Source: http://fallout.wikia.com/wiki/Fallout_4_weapons
Healths:
Name Health (Lvl1) Gain/Lvl @ END 10 Player 10 5 Human NPC's 2
Effects:
Name Position HP Loss/S Poison Crouch/Still 0 Crouch/Walking 1 Crouch/Running 3 Standing/Still 2
Standing/Walking
4