I am a full time Mlem user, absolutely love the app. I am not looking to replace it, however there is currently no development for being able to manage your media within the app.
I would also like to find an app that can save posts and comments as drafts. This is not a deal breaker however and would only be looking at that if it has media management.
I used to use Arctic, and even back when it was being developed the uploads section did not work well.
I have used Blorp in the past, but afaik it does not allow managing of uploads.
Not yet