Stormblood is good, in my opinion, but as far as the main story goes, only half of it is good with the other half in Ala Mhigo being offensively lame. That said, the post game content is kind of amazing, and it introduces some really cool jobs in Samurai and Red Mage. I'm not sure why Lyse is so prevalent in the title screen, trailers, and promotional material for the game, because she is about as relevant to the plot as your chocobo companion. You can remove her from the plot and almost nothing would change.