After hearing the Barbie soundtrack snippet it seems like Aran and Sio got the most lines again, which makes sense since they're the main and lead vocals, with Kali taking the rap role, it seems like the two other members were left on the harmonization and backing vocals role. But that itself is the implication moving forward, if they were to become an English songs only group and heavily promote in the West, Saena and Keena has little to no role i.e. if you are a Western label why bother getting all of them when you can only get the relevant members. case in point Keene and Saena weren't part of Cupid English version.
Assuming they will really get cancelled hard in South Korea, There's an odd chance that an American label will be interested to pick Sio and Aran only. Then re-debut them as a two member vocal group like akin to ABBA, I know ABBA has more members but you get the point, they have Cupid(Twin Version) under their belt and with the Barbie OST they even got more exposure, a lot of Western producers know their voices now. I mean name any other idols who has an English song that was able to reach the top charts of major Western countries like the US and the UK and stayed/still staying there for weeks that was primarily driven by the Western GP in their resume?
And in case you don't know those two has been covering a lot of English songs. lol
Sio - God is a woman(Ariana Grande)
Sio - I love you 3000(Stephanie Poetri)
Aran - Just the two of us(Bill Withers)
Like Bro that's a lot of additional demos for interested Western labels...
On personal relationship side, if you followed Fifty Fifty, Aran and Sio are the closest and they even apparently share the same room in their dorm. So they don't have any problem on that front either. And for their current controversy? No one gives an f about that specific issue in the Western market. That's not even controversial when viewed through the Western lens.