ITZY make dance-centric noise music.
Lia's voice doesn't add anything to ITZY. She's the best singer, but doesn't have enough power for their dance centric releases. I won't go into her dancing too much but it's not at the level of the other 4. She'd be better in a different group. Think a RV Joy-esque role.
Chaeryeong is their best dancer, but adds nothing else, and is redundant with both Yeji and Ryujin being much strong performers. Her voice unfortunately is also the most bland in the group. She'd be better in a group where she'd stand out more as a dancer. Something like GIdle.
Honestly, in their MV and release for Loco they were forgettable. Yeji was the MVP, then Yuna and Ryujin.
Imagine how powerful they would have been with Somi and Mashiro.
Yeji, Somi and Mashiro would be a strong enough vocal trio. Somi easily makes up for the loss of Chaeryeong dance/performance wise.
And visually/aesthetically, a massive upgrade. You replace the two plainest members (Yuna is regarded as being amongst the top gen4 visuals, Ryujin stands out with her tomboyish good looks, and Yeji is exotically striking), with another visual in Somi, and you round it out with cute looking Mashiro - something they currently miss.
Throw in some international love (Somi being mixed, and Mashiro being Japanese) and you have a better rounded group.
Agree/Disagree?