If it was really about...
the strength of cannabis being the main reason for reclassification. Surely it would make more sense to make cannabis of less than 10% THC (or some more scientific arbitrary percentage) semi-legalised, thus encouraging people to use the less strong stuff. Allowing a personal quota of six plants per household will reduce the drug dealer link, and may even help the housing crisis - think of all those houses being used as urban drug factories actually being used to house people.