Drug bags would work like gun bags i think a drug bag should be implemented now because a system has been found to store items in a separate bag without it having a duplication glitch.
My idea for pros v cons Could also have the system where thy only hold drugs.
PROS:
Allows you to hold more drugs
Also adds more risk if getting caught
CONS:
Makes you walk slower like you have a package in the racket event
Expensive could make the bags $1000 to $1500 to stop mass production
Makes you lose stamina faster or lose hunger faster