What I can say about record-keeping is that the purpose of the section is to allow police officers to keep records of warnings and referrals so as to avoid confusion and ensure consistent application of the provisions. These records are inadmissible per the bill. It's indicated that they're inadmissible for the purpose of proving prior offending behaviour in any court proceeding.
I can also say that the bill provides an overlapping system of checks and balances. Where the police officer fails to exercise their discretion at the first point of contact, lays the charges and refers the matter to the Crown, the Crown is obligated to follow the principles that are laid out in the Controlled Drugs and Substances Act, but also prosecutorial guidelines, which exist at the federal level and at the provincial level and essentially say that criminal charges should be kept for the most serious drug offences that endanger public safety.