Does Purgatory make sense?

1. A common rationale for Purgatory is that are sanctification is incomplete at the moment of death, but sinners can't enter heaven, so we require an interim postmortem state to complete our sanctification before we are ready for heaven. I've argued that I think that relies on a dubious, unexamined assumption:

https://triablogue.blogspot.com/2017/04/purgatorial-presuppositions.html

2. However, it relies on another assumption: sanctification is necessarily a process. It can't be accelerated. There can't be instantaneous sanctification. 

This raises the question of what sanctification is. There are, of course, standard definitions, but let's explore the concept from a different angle. Suppose we view sanctification, or moral character, as a kind of moral perception. Take some examples:

i) I read that someone committed a heinous crime. As a result, I form a negative view of the accused. I later read that he was falsely accused. That changes my view of the accused. And the change is immediate.

ii) Let's take (i) a step further. It turns out that he was covering for an innocent friend. The accused was prepared to face prosecution on a false charge to protect his friend. Not only was the accused innocent, but his action was morally heroic.  

In this case, I don't just change my view of the accused. Rather, I go from having a negative view to a positive view. I now see him as admirable. And, once again, the change is immediate.

iii) Decent people perceive that it's wrong to gratuitously harm a child, physically or psychologically. 

And it's not that they have an inclination to harm children, but that's overridden by their moral perception. Rather, they value children. That, too, is part of their moral perception. They view children in a way that makes the idea of harming them emotionally repellent. They don't need to suppress or resist the impulse to harm children–because they have no such impulse to begin with. 

iv) Another example is the criminally insane. Their insanity generates intellectual misperceptions which, in turn, generate moral misperceptions. If their sanity can be restored, their evil impulses disappear. 

3. If sanctification is a kind of moral perception, which is, in turn, a moral type of intellectual perception, then instantaneous sanctification seems possible if God is able to correct the intellectual misperceptions that twist moral character.