I think Queendom 2 has shown me some groups real limitations.
The Boys put the final nail in the coffin for Chaehyun as a top level main vocal.
Kep1er needs to make the move to making the best Korean dancers the main vocals.
The songs need to be in Dayeon or Youngeun's range with Chaehyun in at best 3rd position as a tone member.
Similar to Red Velvet and Joy, She can still Shine but they are asking too much of her.
This was clear in gp 999 but the fans refused to get behind a top tier main vocal, and there were several.
Convinced as kids are that she could do it.