Because it makes no sense? No one in his mind would let you check what does he has until he can defend himself.
Let people check inventories and they will start shooting friendlies - it's easier to take his blueprints and donate to avoid reputation loss, getting free gear.
Knockout him / put below 0 HP and here you are. But reputation is already lost and you don't know what you get for it.
You seemed to ignore my point about this not affecting TEAMMATES?
I'm talking about ROBBING OTHER FACTIONS, in the CORE, without having to KILL the person to ensure a proper robbery.
Absolutely nothing of what I suggested would increase the rate of Team-killings, at all. And doesn't make sense? So you think a defenseless blue suit who spent 30 minutes looting would rather die, than be robbed and allowed to continue?
This does not make sense at all...