I think this is a really good, fair post.
Anderson may not have the high end skill of a Pettersson, but he showed he can snipe and play a really good complete game.
Completely agree with your assessment on Liljegren. It's clear he is very, very raw. But the tools as you mentioned talent wise are too good to ignore. You can coach out those bad plays out of him, but the elite skating, shot and hands/passing are impossible to teach.
I agree with the Kessel/Mittlestadt comparison. It's a good one. I think Casey doesn't have the shot that Phil does, but the playmaking, speed, and vision is there. He's very raw defensively.