Hmm...

If I could change one thing, I would make it possible to see the progress of the people around you. Such as see how full their "bubble" is and how close they are to the next writing stage. (Goes for computer website and phone app)

If I could add one thing, I would add the ability to search hashtags and the ability to search for a piece of writing by its title.

If I could remove one thing, I would remove... well, nothing!