talking about 2020, i kinda have this strong feeling that something big is going to happen to BT$, they'll be on their 7th years and there's this thing called "7 years jinx" in the kpop industry where many famous groups like tvxq, sistar, kara, and 2ne1 went through hardships and even disbanded after 7 years... so i think either one of BT$ members will choose a solo career or they'll eventually disband by 2020, idk, i hope they'll be safe and there won't be any life-threatening tragedy for them.
https://www.allkpop.com/article/2017/05/10-idol-groups-that-became-victims-to-the-7-year-jinx