First off, hello and welcome.The only thing that is wrong with this game IMO you can't play with the other characters that in our party. I was excited to play as
Gladiolus
I like Noctis a lot, he's great. But the other characters are also good to me especially Gladiolus.
But well, i won't be complaining about it a lot because Noctis is enough, I guess.
Also, my first post here. HI

Regarding not being able to play the other characters, I think I'm going to be okay with that. Noctis alone has a huge range of abilities, weapons, etc at his disposal, so I don't predict there will be a shortage of ways to play him. That should fill the "void" of not being able to control the other characters.
Although, in the VR version of the game, I think you can play as Gladiolus in the first person perspective. I'm not sure if it's throughout the whole game, or just at certain points, though.
 
 But arguing it's bad business is ignoring the intentions of these additions entirely.