Monica,
I think that's already happening.  I also think it's larger than just those that leave (millions...)  I suspect that many Catholics have done their own reflection, discernment (etc.) and come to peace in wherever their journey took them. Most likely won't talk about it publicly, but they've decided internally, even if they play along.

I think your point DOES hit on a huge issue though: the impact of what we see in our bishops, on our personal faith.  I cannot, for example, accept some of what the church teaches, unless I'm willing to ignore other things the church teaches.  So if I'm to believe that women are to be subservient, or ABC is wrong in all cases (etc.), then I cannot also accept that God is truly loving and "knows us each by name" (personally).  The point is that what these guys have been doing is MUCH more corrosive than can be tracked by the mere exodus of millions.  

So that faith development is going on, but outside of the institutional church.