One big thing is this site is missing is the ability to get your posts back up if you posted a couple days ago because no one will be able to see it. They should add a bump button that you can do once a week or day for one post. This will make lost posts seen again.
The next idea I have for Steemit is the ability to search posts on a certain profile. This would make is easier than searching the topic you want online and searching tons just for the person you want to see right the article.
Third, the ability to get emails or notifications of some sort when a profile you follow posts. It would kind of be like Twitter's notifications button.
Lastly, I want to see less of the same old same old. Spam for referrals is okay if they put it in that topic. There should be a button that means the article is posted in the wrong category and should be changed. This would stop people posting random things on introduce yourself and such.
Thanks everybody, please comment what you want to see change on this app.