IF they allowed a free-for-all with FP+ at Epcot then the same people would scoop up all the good ones leaving most people without. Until the park has added some substance, whether rehabbing in Futureworld or finally building out some attractions in World Showcase (currently two empty attraction buildings and several available land slots) then we will have Tiers. It is the only fair way to have FP+ there for everyone, who all paid lots to go.