I believe the best way forward with cannabis will be to make it so that federally it isn't enforced at all but it is enforced at the state level.
Rescheduling it any other way at the federal level sets a precedent for all states. Kicking it back to the states (like abortion) allows each state to do what they want with it.
Conservative states can keep it illegal and the lefty states can legalize it. Or whatever the individual states decides to do with it
I think that was the original idea in our Constitution. If enough issues are forced back to the State it will be perfect. Easy to choose where you want to live. All the insane will move to Californina like maggots to a corpse. I say go for it.