Gonna be honest, none of them sound fluent in English. Momo and Sana have thick Japanese accents, Tzuyu and Dahyun have some problems with pronunciation. The rest are okay but they all can improve. I’m glad Nayeon is learning English because it’s obvious they are targeting the international market now.
Correct me if I am wrong but ICSM is the second longest GG song after HYLT. Local GG did that
Kind and humble queens
I might not follow twice very closely like a stan but i definitely know twice enough to give an opinion. When come to popularity in korea, jeongyeon is not even on upper half consistently. On internet, she has loud fans always complaining that she is not treated fairly as a lead vocal. Members like Nayeon, sana, tzuyu, mina, dahyun are more popular generally.
Whatever, Jeongyeon is top 3 in popularity in Korea according to Gallup.
Let's be real. Jeongyeon is far from the most popular member in korea. Giving her solo coule give her exposure but commercial wise might not perform well. JYPE being a profit-driven company, would not give priority to such activity unless they have exhausted other means - Nayeon, sana, mina, jihyo, dahyun etc..
You don't know anything about Twice, do you? Jeongyeon is one of the most popular member of Twice in Korea and has ranked in Gallup the longest along with Nayeon. She has great potential to succeed if she goes solo.