Just watched a dozen of videos from the Vegas show and it's quite remarkable how much Jon suddenly moves on the stage. He hasn't been this active since 2011 without a doubt. Compare it to the 2017 NA leg when he spent 90 % of the time by his mic stand to now where he takes pretty much every opportunity to let loose.
For me it makes a huge difference and makes the experience very much more enjoyable. I wonder if it's because he simply feels more relaxed and comfortable now or if it's simply because he wants to prove something to himself. Either way, it's very nice to see him bringing back the front man in him.