First and foremost if you add the ability to have night mode come on at sundown, then Id use it more. Please implement an auto feature. Its time to catch up with Reddit.
It would be awesome if we could rate stories based on our interest. Curated stories for individual users so that I dont have to see a story about the Kardashians if my main interest is stories about the situation in Korea or the environment. You could really do a lot to make Moments a news worthy addition. Right now its just sloppy.
Example: if I rate political stories high, then the main Moments page should have political stories.
Top stories should never be entertainment in my opinion and a preference bar where I could set and edit that would be great.
Please add the ability to follow any hashtag I want. (Example I would like to follow popular #Parkland tweets for the next 5 hours. Or I would like to follow #SOTU posts for the next hour.)
One more thing. I want to be able to see Tweets around me. Have a "Nearby" button.
Finally, add NSFW and SPOILER tags so that they dont pop up if Im looking at #TheLastJedi tags. Its a an easy thing to implement. Just do it.
Otherwise, a well designed app. Still more to do if they want it to be great.