“Mulan,” Disney’s latest live-action update of an animated film, is a disappointment. Part of that is beyond the film’s control. Streaming exclusively on Disney+ because of the global COVID-19 pandemic (and costing an additional $30 fee), “Mulan” is a grand-scale adventure with sumptuous costumes and set design, sweeping vistas, and elaborately choreographed action and martial arts clearly meant to be seen on a big screen. Continue reading Review: Mulan