Who of the girls would give trendy or unconventional names to their children? Obviously they would go for Korean names or anything conventional to their culture, but in English what would they go for?
I feel Nana would name her kids Buttercup or Harmony, something related to nature.
Cass would go for something rare and artistic, like: Claudine Augusta or Persephone.
I completely agree. I think Jin and Namjoon would go the most 'traditional' but still with meaning in Korean. Nana would be a bit quirky as you say, but I could also see that more as going really old-fashioned in quite a cute way. Similar to how here in the UK there's been a bit of a resurgence of people calling their children things like Ethel and Elsie. You are so so close with Cassandra! Honestly, you've almost got it in terms of her first daughter ;)
Yoongi and Jeong-sun if they had children might also go a bit old fashioned.
Jungkook x Young-soon and Jimin x Ara in theory would be quite trendy with their names. Or quite current in terms of what is popular.
Every once in a while I come back to Tumblr because I've fallen victim of a new obsession and I genuinely need to consume every art I can find about that current obsession ahah I'm doing so well I swear