Did you mean that you wanted a CG or ML console game similar to the 765pro main games?
It’s not impossible, but it’s definitely difficult to achieve. The biggest issue being size.
The advantage with 765pro is that they’re smaller thus more efficient. So, you can build a close relationship and bonding with each idol and experience their story/character development as you seen with all of the main games. And, still can perform concerts where each 765pro idol is singing every song (probably 60 by now). So, you can mix and match who you want to perform for almost any song/concerts (except the solos)
Given CG and ML size, this would be difficult to do. I would assume they would need to cut-out a large group of idols to make it possible. But, if you did that then some fans will be upset that their favorite idol didn’t make the cut. And, you kind of lose the appeal that CG and ML are about a large company of idols, not a small group.
Of course, there’s the CG anime route where you just pick a group of idols (CG project) and have everyone else as side characters or cameos. But, I’m not sure if that would work out with a console game.
