The troubled Miami Performing Arts Center is wending itse way towards completion. But what will go in it? Well, the Cleveland Orchestra, for one. And now the MPAC has announced a program asking “local performing artists to submit ideas for development, minor funding and perhaps eventual performance in the PAC’s 2006-07 opening season. The $412 million center, with symphony hall, ballet opera house and performance theater, is set to open in October 2006.”