Yeah, i'm agree with your feeling. And yeah, i think you can figure some general pattern
Even just by showing to my mum, i get that she like way different thing that any others jugglers.
I think crowd like that they can related to difficulty or with beauty (with rhythm, pattern and flow characteristic).
Like people get that throw high is hard or doing a pirouette, cause they can related to, with speed also, speed mean hard in juggling.
And having a lot of ball in the air are hard, but doing some kind of trick for us juggler, for them it's just also having a lot of ball in the air if there is nothing for them to connect.
If you do all kind of 8x,6 and 8,6x variation, how are they suppose to get anything. The brain probably so no difference.
I think you can make a act with only crowd tricks but it's kind of feel like a clapping bait show.