Sinking lonely merchants is too easy and
in my opinion it hasn't any emotion.
I would prefer watch videos that were played in tough conditions, like attacking a convoy in 1942+, going to Scapa Flow in 1939, avoiding depth charges, or anything from 1944+ where you have literally no place to hide (always with 100% realism).
Unfortunately I do not find this kind of crude videos, and I'd would love to see them, that's why I'm trying to record gameplays too, live broadcasts (no load/save) in intense enviroments like the ones I told you. But I'm to newbie as youtuber/broadcaster and I'm doing a lot of mistakes while I'm recording, like no audio or similar
Another unavoidable mistake is that there are some looooong patrols where I'm unable to find any target.