Dude, who the fuck knows. They're obsessed with making Overwatch heroes are disgustingly hypermobile as possible. Few people thought Lucio would be wall-riding structures in HotS, yet here we are. I think it's likely Hanzo is going to at least be able to 'leap' over walls and structures by climbing them, something that will be heavily obnoxious if not Genji-tier gamebreaking. Tracer is shit but her ridiculous mobility is incredibly annoying, for instance.