That would be great. I am not sure if it was RES doing it or it was a default reddit thing but I do remember images automatically expanding on there. Having it happen automatically on Lemmy would be great as long as the user is not on a slow or data-capped connection.
Just an FYI but if you posted anything prior to March 2023, the Pushshift project archived it. Even if you requested Reddit itself to remove all of your data, everything will exist in that archive forever.