The following links might shine a little light on some of the questions and from the horses mouth.
AW149: Designed to Survive on the Modern Battlefield
Part 1
https://uk.leonardo.com/en/news-and-...lefield-part-1
Part 2
https://uk.leonardo.com/en/news-and-...lefield-part-2
References DEFStan 00-970, MIL standard 1290A and ballistic vulnerability analysis for parts of the design thinking.
Good for a salesman's PowerPoint presentation, although it leaves plenty of unanswered questions.