The extremely game comic actress Annie Murphy is cursed with a “schitty” screenplay and “creaky” craftsmanship in Andrew Rhymer and Scarlett Bermingham’s All That She Wants (C), a pedestrian romantic comedy that squanders an appealing premise. Murphy plays a newly single Toronto woman who rebounds with the considerably younger man she once babysat, played by Cooper Raiff. What begins as a college-dorm one-night stand evolves over several years into a messier, more realistic relationship, but precious little about their journey feels new, surprising or emotionally revealing. Murphy and Raiff generate scant chemistry, while the film’s conflicts arrive fleetingly and resolve too conveniently to create much dramatic tension. Even formidable comic talents including Zosia Mamet and Christine Baranski are stranded in supporting roles that give them little of consequence to do. Of all the films vying for attention at TIFF, this agreeable but thoroughly ordinary production feels among the least deserving of a festival spotlight.