I suspect Bernie wants Bloomberg on the debate stage. Taking some shots at him to his face > responding to a quarter billion dollars of paid advertising with some zingers on the stump.
"Mr. Sanders, some would say that you are a communist Marxist and you would completely the destroy the country and our economy. You are a communist are you not?"
"First, there is a big difference between the socialism that I fight for and the Marxism that the Republicans use to scare poor people into...."
"Sorry Senator Sanders your 10 seconds to respond is up. We'd like to remind all candidates to give short and clear Yes or No answers and don't talk too loud to not trigger our more sensitive viewers. We're moving on to our next candidate. Mr. Bloomberg, who's surprisingly surging in the polls."
"Mr Bloomberg, your ad with the dog during our break was really funny. How do you come up with such great ad ideas and do you think these ads are effective against the hate speech of other candidates, some of which are here today like Bernie?"
"Yes, I think they are very effective and I believe [...] and that's why we need strong and powerful leadership in America"
"Wow Mr. Bloomberg, tell us more. Please here is the microphone. Keep talking as long as you like dear sir
"