Yeah, when I heard about how the gameplay worked between the characters, it disappointed me a bit. It doesn't sound like we'll get much of a narrative that ties characters together so much as you sort of stumble across them and literally just ask them to join you.
As for the graphics compared to the cost, I think that's sort of the problem that we run into in this day and age. Developers can create massive, beautiful games like God of War, because they expect to push enough units that they can recoup a higher budget with more sales. In the case of Octopath Traveler, the budget is likely far, far lower than a game like God of War; however, the game is likely expected to not sell nearly as much. I'd be surprised if Octopath Traveler's lifetime sales even hit God of War's week one sales. So, in a way, you feel like you're getting more since you're getting a $100 million dollar game for $60 compared to getting a $10 million dollar game for $60. Of course, it's hard to put a price tag on the enjoyment that you get, or even understand what it will be prior to playing it.