Twitter gets bad press for being full of trolls and fire being superficial. Although I don't disagree there are those elements, it isn't unique on the internet.
I use Twitter a lot for keeping in touch with others in my field of science and what they are up to or thinking about. The traditional scientific publishing model is broken and social media is more attuned to how we want to communicate our work. Quickly, easily, to our peers and the wider community.
Hashtags are an extremely efficient way to follow conferences that you are not able to attend in person.
Conciseness is a strength of Twitter, breaking that will make it fail.