Audiences are impressed by multiple ukes, of course. If one's good, abunch is better, right? It's always a crowd-pleaser.
A couple of years ago, a local museum staged an Asian arts extravaganza that included a kungfu troupe whose piece de resistance
was having 20 audience members line up to push on one of the troupe performers.You know... each guy pushes against the shoulders of the guy in front of him, and the one in the front of the line actually has his hands on the kungfu guy. They couldn't budge him. The crowd loved it! Would they have been as impressed to see one guy pushing?
True! On a less flashy level, this makes me wonder if any branches of Daito-ryu teach a counter to Kata Guruma (since multiple branches include the demo of a nage being lifted by multiple uke).