User blog comment:Gundam Legilis/What if the White Trailer was better?/@comment-25405817-20160307023324

" The only things missing is that we need a small flashback."

A Flashback for a Flashback?

" We can have one where a shadowed figure of Papa Schnee stands in front of Weiss, hinting at their relationship. If we get her name..."

You confused the gender of the subject.

" (If we can, we can put the exposition of the Armor and the reason of the test here from the manga chapters)."

Exposition is something you'd want to avoid at all cost. If there's exposition in a form of fiction, it is because there was no other alternative.

Also, the reason for the Manga is to shed light to the events of the Trailers with information that otherwise doesn't have to be in the video itself. However, the canonicity of the manga is questionable.