TBF, there are only so many topics and the answers will change over time anyway. I know that I've even repeated myself before. But what thread topics have you noticed tend to come up again and again?
Here are some I can think of
What got you into kpop
Who was your first group/bias
Have you ever stopped stanning a group and why
What song got you into your fave group
What is the most popular/unpopular song in your fandom
what popular song can you not stand
What songs would you use to get someone into your fave group
What are your least fave songs of your fave group
what bsides should've been title tracks