Personally I think a slight element of randomness would be nice when it comes to singles, rather than everything being very formulaic all the time. It feels like there's some kind of strict numerical formula determining how many singles we sell, aside from the "trending" genres/lyrics. Maybe there's a 1/100 chance your debut single will go viral and rocket your group to fame, or maybe a single will "flop" once in a while and actually make fans leave the group - it certainly happens with real groups.