I suggest changing the ORP from total protection and turrets not shooting people.
Reason for this is:
Potentially able to place C4 etc and dinos on turret mode in/around base.
People scouting out your base to learn weaknesses, potentially even hide somewhere till your on then initiate attacks.
I propose you make it so turrets can still shoot people.
You could change it so that its just increased health and turret damage rather than full blanket protection.
Could also make it protect passives (if they have nothing in inventory.
I just think the current ORP is bad and any decent player wont want enemies running round base figuring out how to raid it