It's immensely frustrating to be watching a video in the photos app and swipe a tiny bit wrong only to lose all current progress in the video even after you swipe back. Even scrubbing controls for long videos (1+ hours) can be super finnicky and it's tough to select accurately. The traditional scrubbing method of holding while moving vertically to scrub at slower speeds doesn't seem to work either.
As a result, I'm often catching myself in frustrating situations where I'd like to just __UNDO__ whatever action I previously took was. Either jumping around a video to the previous timestamp, or undoing the close safari tab button I didn't mean to select, or any number of other things I accidentally press due to the options being just a little too close to each other.
It's just a mild annoyance, but it's something that would massively improve my experience with using the device, as someone who has spent a LOT of time in it nearly every day since release.