I think it won't be like that all. The demo played by the IGN writer was probably designed in a way to showcase a few different playstyles, but in reality, I believe the intention has been to get the player attached to different characters or a specific team composition; like we're actually supposed to have favorites.
Obviously the game has dozens of characters, each with their own unique personalities and voice work, and that will definitely repeat throughout the game. Look at the characters that you collect, like your horses in Red Dead or Breath of the Wild. You find someone you really like, their personality is interesting to you, you like their playstyle, how they look and such, so you take them out more than the other characters you have. That specific character levels-up more as a result, and becomes even more powerful, and you sense something like an ownership towards them. And there's permadeath in the game, exactly like the horses in Red Dead or Breath of the Wild, so you tend to take care of them, making sure not to lose them.
It's kind of a new experience, as opposed to a fixed protagonist, but I still think it can work very well, if you look at the game as a playground and the characters as different toys that you can pick and use to your liking. Those toys come in many varieties, they each have their own unique traits and there are common toys or rare toys. The act of finding them, developing them, customizing them, and making a team out of them is really interesting, and in fact the entire appeal of games like Pokemon or Persona. It eventually results in developing connections with the characters that you own.
Honestly it seems really fun, but yeah, it's different.
