Some other improvement idea to UI:

when going to twitter notifications and opening an url from a tweet, the phone opens the browser but when performing a slide down gesture (closing webbrowser) the user is redirected to home screen. This is annoying as it should go back to the twitter notifications (at the tweet i was performing the action)

Also the twitter notifications are limited to a certain amount. It only shows me something like 20 tweets... Not enough tweets to make the feature something worth using.