A new idea: Damaged Power Armor
As we all know, Power Armor is different from normal armor because of its artificial intelligence systems. And we suppose that when the wearer of PA got killed, the system was already broken, and it couldn't be repaired by the normal wasteland technicians.
Various "Power Armors" are replaced by "Damaged Power Armor" (like "Damaged Brotherhood Power Armor", "Damaged Outcast Power Armor", "Damaged Enclave Power Armor", etc.) in the droplist of enemies and loots. The damaged ones have the same DR as the normal ones, but with no DT, Rad Resistance and STR boost, which are due to the lack of A.I. systems. So, "Damaged Power Armor" is only a normal armor with relative high DR.
Some suggestions:
-Remove "Power Armor Training" perk
-"Power Armor" drops change to "Damaged Power Armor" (A.I.systems are broken in combat)
-"Power Armor" from merchants change to "Damaged Power Armor" (most merchants' goods come from scavenging)
-Most "Power Armor" random loots change to "Damaged Power Armor"
-Several specific "Power Armor" loots (e.g BoS armor case)
-Several specific "Power Armor" sellers (e.g. BoS quartermaster)
-Several unique "Power Armors" (e.g. Hardened T-51b)
-"Power Armor" can be repaired by "Damaged Power Armor" (supposed that Dean Electrics have informations about circuits and chips)
-"Damaged Power Armor" can be repaired by "Damaged Power Armor" (only change damaged plates)
-"Power Armor" has a relative higher price than "Damaged Power Armor"
-"Damaged Power Armor" can be gained in early games
-"Power Armor" can only be gained in late games
There are "Power Armor"(rare, specific loot) and "Damaged Power Armor"(not rare, normal loot, e.g. dead bodies).
Power Helmet is intergrated into Power Armor (PE boost due to targeting system)
Power Armor: WGT 150, carry weight +300, Sneak -25, ST +2, PE +1, DR +x, DT +y, Rad Resist +z
Damaged Power Armor: WGT 150, carry weight +0, Sneak -50, ST +0, PE +0, DR +x, DT +0, Rad Resist +0