I was also there, and it definitely got me thinking about how different it must be to project to an audience with lots of empty seats vs a packed arena. The skaters performed like they had a full audience. Ashley in particular injected a lot of energy and pizazz into her performances. I loved seeing Mirai's spiral, and the crowd was roaring for Nathan. I went with someone who doesn't watch skating, and they were really impressed with everyone and said that they would love to go to something like this again.
A lot of group types of numbers can be cheesy, so I wasn't sure how I would feel about the 90s number. But it was great! The skaters were all having so much fun with it and even the ones who were more introverted in their individual pieces lit up. Maybe the secret is just to go full on camp with these things

If anything, it was a little cringey watching the Video Killed the Radio Star video on the ice at the start of the show. I had seen it online and thought it was hilarious and fun, but I didn't realize that it would be part of the show...when it started, I was thinking "Oh, we're actually doing this, watching the whole video."
I hadn't been to one of these types of shows since it was Champions on Ice, when ice skating was in a different era for the US. I remember the audiences being full and enthusiastic. It's hard to say what the answer is in terms of selling more tickets. I'm not even sure having international skaters would do it, though it wouldn't hurt.