Is there a way to improve performance of many nested transclusions?

Not that I necessarily object, but could one of you explain why? I don’t yet have any real intuitive understanding of the dis/advantages of the two techniques.

But if anything, I would have thought of moving in the opposite direction, adding additional ViewTemplates; these templates would appear underneath the default body template – and moving the verse content from text to a custom field. This would allow users to claim the text field for their own annotations at all levels: Verse, Chapter, and Book.

That makes sense, and it’s definitely the former. Chapters are structured collection of subsets of the Verses.