Two very useful features that would be good for audiobooks and one of which would also be good for podcasts.
Current chapter progress. The ability to see the progress of your current chapter in an audiobook. This would be very useful when trying to find or resume at a specific spot as currently you only see the progress for the entire book. It is difficult when you get into books that are days long.
This one was requested before but I feel needs mentioning again as it would be huge QOL feature not only for audiobooks, but podcasts and other long audio files.
Bookmarks. The ability to bookmark current progress. Especially useful when listening in a situation or environment where distraction or sleep can take you away from your audio.
Can you share such file so I can have a reference very long file for tests?
For 2) There’s already automatic resume points. Most providers do not support more than that and I for the moment I can’t see what manual bookmark would add here.