As you may have read previously in our route announcement, we're working on an expansion for the Cascadian route which will cover the rest of Stevens Pass in the historic setting of the recently released route. This second part of the route will run from Skykomish to Everett and will be steam/diesel country as the electrified territory never expanded past Skykomish. Currently, we are backdating the tracks and are nearly done with this task.
I have taken and annotated a few screenshots and uploaded them to my blog:
https://golden-age-rails.blogspot.com/2018/11/route-progress-skykomish-everett.html
The two probably most interesting screenshots are from around Lowell:

... and Everett:
