The mission should be that in the years to come fair trade will become the norm, and all other production methods will reduce almost to zero due to higher prices. Prices of those products should become much higher because of higher taxes ( for non-worker-friendly production, foot print, water print etc).
Sustainability and fair trade should become more and more connected. In the long term that's better for us as well as the planet and therefore is cheaper.
As many world-wide conferences about the future of our planet are due to start this spring; it's also becoming more and more clear that the real development has to come from the bottom: consumers. We have the power in our wallets. Even if they're not always filled to the brim, we still can make choices.