Soo we all know that LOONA has not official positions BUT, I think we can guess from all the treatment? they had counting pre debut and group songs. I don't have any idea of what I'm going to talk about so this could be absolutely wrong lmao.
Chuu: all the fandom knows that Chuu is the best (or the second best) vocal in LOONA. She's always getting the hard lines (higher notes that my self esteem lol) and all those things that a main vocal do. BUT!!!!, I think giving her many high notes in a song that has a choreo isn't the best idea, her breath control doesn't seem to be the best; so, in my opinion, they should give her many lines in ballads or songs that doesn't have a hard choreo, for example: perfect love.
HaSeul: we all know that HaSeul deserve that main vocal tittle, but I don't think that she could be considered as such bcs she didn't have that much of lines?. In ++ she was a vocalist, in XX she was a lead vocalist, and sadly she couldn't participate in all the tracks of #, but in Oh (Yes I Am) her lines were pretty risky and she was in top 3 for DDD, so hopefully in next comeback she finally could be considered as a main vocal.
Kim Lip: I'll say that she was a main vocal for OEC, but lead vocal for LOONA. In Stylish she's kinda considered as a main vocal (if I'm not wrong, she did hit the highest note in LOONA history). She's normally leading the chorus in LOONA songs and has a pretty good amount of lines (except for Where you At). Her tone is pretty pleasant to hear, so it's no surprise that she gets that many lines.
Yves: I think that Yves have the skills to be a main vocal but BBC didn't gave her a chance (at least in LOONA ot12 songs). She's one of the members that normally sings live, you can hear her voice crack in one of So What performances, so I'm hoping that someday she'll have the chance to show her full vocal talent in a LOONA song.
HeeJin: HeeJin is well known to have MANY lines. In ++ she had a pretty big amount of lines, in XX had a normal amount but still gave her a song (Where you At), and for # she had more lines than XX but not that much as ++. She is maybe the one that showed her vocal talent the most. She's really stable and charismatic so no wonder her big amount of lines.
JinSoul: I think that JinSoul was more focused in rap for OEC but in LOONA she's really focused in vocals. I'll say that in # the amount of hard notes has increased, she has almost one high note for each song, sooo I'm not sure if she maybe is going to be one of the main vocal for LOONA, but if she were in another group I'm sure she could do it.
Choerry: she have the skills but I'm not sure about her confidence. She kinda avoids hard notes if she can and kinda doesn't sing live? so I'm hoping she can deal with those lines someday.
Olivia Hye: I'm not totally sure with her, but in these comebacks she is kinda focused more on dance and rap so I'll say that at least right now she can be considered as a vocalist.
HyunJin: ok with this I'm kinda sure lol. In ++ she almost didn't had lines, in XX she had but nothing impresive, but in # WHAT HAPPENED. I don't know if it's just because HaSeul wasn't there but her lines were pretty hard in my opinion. Happy for her because she is stable and her tone is pretty good so them giving her this big chance is a total YES for me.
YeoJin: I think someday YeoJin could be treated as a vocalist but right now she didn't have that many chances, she just hit a high note in Perfect Love and Butterfly but that is it for now.
Go Won: didn't have many chances + doesn't have many confidence. If BBC is smart they could start giving Go Won more lines because her tone is pretty unique, they could give her bridge lines as Twice's Mina.
ViVi: still fighting with korean and didn't have that many chances (repeating a word doesn't count)
YeoJin (she's really good with freestyle and has a pretty good stage presence, her being so short it's a big disadvantage).
VISUAL LINE: (with this I'm kinda basing on this video and they are normally called pretty by koreans)
Olivia Hye (aspiring to be main)
Rapper: (doesn't rap that much)
Sub Rapper: (just rap for one or two songs)
What is your opinion???????????