I think it's cute that they believe there will be enough of a population to sustain the game for a further 10 years. I am also growing tired of the "Dawntrail lays the foundation for the next saga" when I have yet to see what it is actually paving the way for. Currently, it is a horribly written side story/detour you could completely skip over and miss out on zilch, zero, nada. I believe quality and population will continue to decline in 8.0. Will we see 9.0? Possibly, but I could see FFXIV switching to a F2P or more maintenance mode situation like XI with smaller story/patch updates vs. full expansions.