Lyon has been world class for a few years now, anyone who would blatantly dismiss that probably doesn't know much about the game.
On the Handscomb catch, I've always been of the opinion that they should scrap the soft signal and 3rd umpire, they only make things more confusing, if the player claims it and the umpire believes it to be out, then time to go. Any dishonest players will get found out pretty quickly.
And if anyone didn't understand why there needed to be a cultural review in Australian cricket, watching some of kholis antics this test has convinced me that it was completely necessary. A Great batsman, but a petulant child.