My point on the techinical side of Keystone is really based on the fact that it seems to be a steeper mountain than Breck and Peak 7.
Mogul runs and catwalks are indeed the enemy so you bring a good point in regards to that being a problem if I don't know the mountain very well.
When we went to WP last time and she was only ready to handle the green runs, the map made Village Run look like a fun option only to realize that it was a glorified windy catwalk.
I was hoping that now that she can handle those easy blues that WP might have some fun ones for her. As a point of reference River Run at Keystone is a blast for me and my son, but would surely present a challenge for her.