This is fun stuff, I like talking through these things.
I think a little bit of what we're saying is just overlapping and is just how we're saying it.
Id say that the following occurs in this order
First : ratings + class = position on BB
Second : class + position on BB = outlook
Third : outlook + position on BB = probability of EE
I agree with this. I think you could just bypass the last step as the outlook is more meant to just help the player (I think). However, there are very large changes in probability of leaving within the outlook and it's definitely not linear. For example, #28 Soph Likely Staying has about 40% chance of leaving while #40 through #100 Soph Likely Staying has about 10%.
So that's one of the big takeaways here. You can see a big drop within an Outlook but it doesn't go to zero, it basically drops then stays flat through the majority of the big board.