I propose the following amendment (amending section 4;1):
(1) All hard drug offenses for personal use shall be decriminalized in the Southern Region. All hard drug offenses relating to transactions shall be decriminalized, unless one is in the business of dealing hard drugs - which retains criminal penalty
As this bill is not legalizing hard drugs outright, I do not think it makes sense to decriminalize all transactions, which would in effect give cover for dealers to operate businesses without meaningful regulatory oversight (which could only be present if hard drugs were outright legal). I believe this amendment of mine would both address the aforementioned problem, and prevent individuals who aren't dealers by trade from being criminalized for selling hard drugs.
There is comparable precedent for this sort of distinction with guns, where individuals are allowed to sell firearms without any legal sanction, unless they are "in the business of selling firearms", which requires licensure (given that there will be an obvious absence of a licensure scheme for hard drugs, it would just remain illegal).