Speaking with my audience member hat on, i would definately pay more on a ticket price if there were aerial acts on the bill. I just came back from doing Sexy Circus Sideshow at Bush Hall and there were two amazing aeirial burlesque acts (one of which actually brought tears to my eyes)...
i know a lot of venues simply can't host such acts but those who can definately should (and offering you enough money to make it worth your while) and i would definately be willing to pay more to see it!