Here's my wish list of Twitter features:

Show an ordered list of the accounts who are followed by the most accounts that I follow. For example if 24 out of the 36 accounts I follow follow @xyz, then @xyz should be high on this list. If 1 out of the 36 accounts I follow follow @cba, then @cba probably shouldn't be on this list.

Choose whether my comment on a quote tweet is positioned above or below the quoted tweet

Handles (usernames) longer than fifteen characters

Set a gif as my profile picture

Custom CSS styling akin to Roam themes, even just colors

Tweet an audio file

Export tweets, threads, drafts, lists, bookmarks

Filter my follower list in interesting ways (thanks Visa)

Fewer limitations and requirements around Twitter's API

Polls with media/gifs

What did I miss?