The Isekai genre struggles not because of some fundamental problem with the concept of Isekai, but the reasons why it is popular. When an author writes a story through Isekai, then even their death will not detract from their impact (see Zero no Tsukaima). However, when an author decides first...
I think that the core of "morally questionable" has to be our ability to relate to the character. A lot of my writing interest circles around the idea of wanting to do the right thing, but failing to do so because it would mean sacrificing some extant privilege. It comes from my own experience...
I think the key to understanding English punctuation rules is to get a good grasp of the rhythm and cadence of spoken English. When you understand commas as pauses, it becomes a lot easier to see where they should go.
A character's strength is relative to what story is being told. In ETA Hoffmann's The Golden Pot, Anselmus is, in my opinion, strong by the end because he has thrown away his former life and fully embraced the magical world of Atlantis. In Mary Shelley's Frankenstein, the monster is weak...