I think there's a lot that can be done and improved about the conversation
threads. I know Twitter isn't just for making conversations, but there're
tweets that receive many responses; and those responses could receive
additional responses as well.
What I'm proposing is a lib/framework for handling conversations in a more
intuitive way, so it's easier for users to get more information about the
thread and to make replies that get more relevance on the conversation.
If you're interested, we can talk about the idea to get the most possible
from it for GSoC and for Twitter users.