On Mierle Laderman Ukeles at the Queens Museum, Aki Sasamoto at SculptureCenter, Maurizio Cattelan's gold toilet at the Guggenheim, and Mathieu Malouf at Lomex
A trashcan on New York's Lower East Side will soon be home to William Gallery. Is this gesture a glib line about the art market's search for the next big thing? Ironic self-deprecation? A louche con…