I've already posted an example of how awesome managers are (here) but is that enough? Or would you rather actually be a member of the group?
This is just an hypothetical question so don't worry about your gender, Korean speaking abilities, talent, etc lol.
In the band or the band's manager?
For me, I'm an attention hog so I'd definitely would want to be in my own band. Not necessarily my bias' band cause we'd inevitably fight cause of stress from the job. I'd rather be in an idol group that promotes regularly with my bias group :3