I think something that could liven up bitcointalk is a chat feature, it could be like a live chat where you can continuously talk with others.
i don't see how a live chat/chatroom/trollbox would "liven up" bitcointalk?
If there was chat I think this would make even more people stay on bitcointalk and take part in the discussion.
you might think so, but in reality, it won't.
also, we already have something you could kind of consider a chatroom, and that's
Wall Observer.
If we wanted to we could even integrate some more complex chat features like discord or telegram does. What does everyone think about this?
hell nah. if you like the chat features on discord/telegram, just go there, i'm sure there are plenty of bitcoin related servers/groups for you to join.