It's not as green (pun intended) as it seems with a lot of crony capitalism involved. The "Licensed Producers" are are poised to cash in on the recreational market and it doesn't look like they will treat the medicinal market that has propped them up for years with the respect it deserves.
However if the government lets the small craft producers do their thing with minimal oversight, and it looks like they will, it's going to be a beautiful thing.
My fingers are crossed that Sessions has woken the dragon with his memo and federal legalization ends up on the table in 2020, if not earlier.