$$$ I think that could really catch on!
$$$$$$ Woo hoo! Cha ching!
I still don't know if it really will be princess roulette ($$$). But if it is, I don't know if they'll put something up to identify who is back there. Folks could then get in line expecting the one identified out front, only to see it change moments before their turn. It's just a bad arrangement all the way around. Ever try to find a specific fairy at Pixie Hollow? Yikes, that stunk.
They used to do true princess roulette ($$$) at the princess meet & greet at DL. It was awful. The lines were long and moved SO slowly. And to top it off, you could get back there to wave goodbye as your favorite princess leaving for the day.