Honestly, I'm not catholic...so I don't care if he is a saint or not in the religious sense.
Logically speaking, I do not believe he should be penalized for the actions of his underlings, he was not corrupt. I'm sure there were implications he was avoiding when he didn't respond to those allegations. I don't doubt that the church has already thoroughly investigated each and every claim of abuse. In cases they took little or no action, I believe they probably knew that no such abuse ever occurred. I'm sure that every accused priest who got transferred was probably transferred because those people wouldn't be able to believe in that person again, regardless of what the Church said about their innocence. Remember how badly the media demonized them.
I believe that yes, perhaps a few children DID get abused by a rogue priest. I also believe that at least a simple majority (51%) of those children/people who came forward were faking it. The motivation to do such a thing to a priest of the church, especially if those people had their own personal vendettas against them is easy enough to believe, especially if the priest has done it before even if the priest was disciplined and rehabilitated by the church itself, or submitted for criminal punishment if it could not.
I also know for a fact that the media itself made more of a demon of the Catholic Church than was strictly necessary, we all know the media is full of capitalist people who are prone to do such things because it draws viewers and brings in advertisement revenue. The media outlets which reported these things was the root of the problem in my opinion, not the Pope himself.
Now, as for the criteria for Sainthood, I believe that's fair enough to be honest. I don't believe that those criteria have changed in the last century to be honest. If you can prove me wrong on this one then do so, but it'll have to be a publication straight from the Vatican saying so, or one directly citing such a document.