Love the new features. You could post the markdown editor as its own keyboard extension. Undo and redo right there are invaluable, maybe with cut and paste.

The only features I can think of is a toggle so when you scroll the feed, if you long press media instead of save/share have it show the media in something like Quick Look. And video scrubbing

I feel like sometimes people shy away from open source because it can be unpolished, but not Mlem. This is polished to a shine, and adding loops integration is a cherry on top.

Hold the bottom left emoji button or swipe up on it. You can quickly change keyboard language, squish it to one side or go to settings.