You are correct marijuana's are something that could go big in bitcoin. I know a ICO that promotes marijuana the cannabis in this forum are really in the place to promote and legalize marijuana in most countries in the world.
Do you really think that the governments around the world will legalize marijuana, that is not going to happen , i am not really sure about all the coins that support the cannabis industry ,the first thing is it wont be a success as it is not legal in most part of the world and you will end up in legal trouble if you are dealing with these things.
It has the future of all amoung currency. I know Marijuana will be legalize in the near future as it will be a billion dollar industry as we all know that se countries banning Marijuana but the potential is always there. Something big is coming in our way so watch out.
I am not sure in which part of the world you are living in, do not dream of a day when you see marijuana being legalized ,it is a multi billion dollar industry world wide in the illegal market but that does not need new tokens for it,i do not see those coins lasting for a couple of years.