Suggestion -- Tap comment to collapse and pop-out image viewer
With the recent change to allow swiping for actions this checks almost every box I have for general usability. Just two things come to mind:
It would be nice to be able to tap a comment to collapse and hold to show menu when swipes are enabled so it's a bit faster to browse comments.
The ability to pop out an image (that can be swiped away, ideally) would be nice since clicking an image halfway down the page often leads to having to scroll down to see the whole thing.
Relatively minor things and doesn't break the experience at all, but would help usability just a touch.
Unfortunately both of these actually do interfere with the current UX and neither are only positive. This means both will need to be togglable settings.
The reasoning for (1) is, I've seen users complain for other apps that it was annoying that tapping a comment collapsed them because sometimes they were trying to tap a link and missing. The current behavior when gestures is on is it would just expand the actions which will not really interfere with the tap.
The reasoning for (2) is, currently tapping an icon doesn't just expand the image, it also expands all content for that post (you are essentially looking at the entire post). Changing the behavior to tap to see image would get rid of the ability to see the entire post if the user wanted to (me being a user of my app, I want this lol). Technically right now, if you wanted to see the image you can tap once to expand and tap on the expanded image even if its only partially shown to see the image in the image viewer. This is sort of a workaround but it requires 2 taps.
I think for a complete solution these will need to be toggles you can enable within settings.