The one thing in all this mess that never ceases to amaze me is that the Catholic Church has no concept of why people are angry.
You would be surprised to learn that many of the Laity are outraged by both the crime, and the cover up. In the past few years, any number of them voted with their feet.
I watched that happen in Connecticut about a decade ago, in a local parish, when it became rather obvious to the people that some of their donations to the church were (or so the bookkeeping appeared to show) being used to defend in court, and pay damages from case outcomes, clergymen who betrayed the trust of the Faithful. It came to a head when an expansion to the local church school was in the works, to get delayed as funds dried up, and more donations were solicited. (As I heard this from a member of the parish council, I may not have all the facts, and he may have been only partly correct, but I know how it looked to a lot of the parish).
Some people left, others remained hopeful that the RCC heirarchy would learn from it mistakes and correct its course.
It appears that a course correction, or three, is in order.
Here is an idea: for the good of the Church, if this smoking gun, this letter, tells us that the current Pope materially directed/authorized a cover up on this matter, he would be right to resign, to make his sacrifice ... for the good of the Church that he loves. (Funny, there is something in Scripture about Somebody who sacrificed Himself due to His love for His People ... wonder if Benny has read that part lately ... )
Such a self sacrifice would not be grandstanding.
Why?
It would indicate that the RCC acknowledges its wrong doing (see also sin), and an attempt at penance and reconcilliation will and shall be made.
What a concept: such an action might be consistent with RCC doctrine and dogma.

It would also allow someone involved in a cover up to raise his moral position to at least equal that of Richard M. Nixon ...
It's not like there aren't a few dozen cardinals sitting about who'd make decent popes, or some reasonably talented bishops handy. Popes are mortal. None of them is indispensilble to the Church, but a few might be detrimental to the Church if they stain it. (There is a clever quip from Martin Luther necessary here, but I can't think of what it is at the moment ... )
DR