I played the dancer's scenario in the Octopath demo and yeah, it seems really good so far. Story, while not the most innovative thing, seems to have potential and its more reminiscent of classic 16-bit era RPGs. The whole game, from art style, to having 8 characters with intertwining stories, feels like it is to SaGa what Bravely Default is to FF. Romancing SaGa 3 in particular.
After you beat the dancer's scenario you can continue playing for a bit and go to the warrior's town. It lets you recruit the warrior, so you will be able to recruit characters from different scenarios, not unlike other SaGa games.
My biggest issue so far is that the enemies feel like HP sinks, even with exploiting their weaknesses and comboing them. And also the voices in battle get annoying FAST. Seriously:
"I am ready"
"I am ready"
"I am ready"
"I am ready"
Every goddamn round!
Hopefully these issues will be fixed during the final game.