Let us not forget a very important thing. This is the FIRST state that has made recreational use legal - not decrimanilized, not medicinal only but truely legal.
That it is the first state is a tremedous problem. It is going to have be be made an example of. Not by attacking the users frontaly but through the use of propaganda. The state must not be allowed to suceed. If it does other states will follow suit.
Productivity in the state will have to go down. There will have to be more sick days taken than any other state per capita. There will have to be many more auto accidents. Children will have to be involved somehow - more parents taken away, more incidences of adults giving children pot, more pot found in schools (which will work well as the Feds have some direct influence over schools). The taxes raised will have to be shown to be far less than anticipated. Organized gangs, preferably from outside of the country will need to be discovered working within the state. I believe that there will be more incidence of harder drug busts, after all, marijuana is not just a gateway drug for users but one for the aspiring businessman as well.
While this is going on, the Feds will have to punish the state. Highway funds, welfare funds, perhaps medicare and school funds will have to be witheld.
All the while, I am quite certain that the Feds will crack down on all producers. I have not read the law but I suspect there is a major flaw in it - that is there is no safe haven for producers or vendors of quantity. It is all well and good that the casual posession of an ounce is legal but that is not all that different than in California, where anything up to an ounce is an infraction resulting in 100 dollar fine - and nothing else. There is a chink in the system somewhere and I think it is at medium levels of distribution, and maybe growing.