You would of thought that the ability to define the page size and orientation would be a given, but this is Fusion.....
Currently, there is only one portrait option, so if you want that in any other size than A4 you're stuffed. The ability to do custom sizes as well as more portrait options would be great. Also there is no option to change this after the drawing has been done, which is something I have seen others asking for and also think would be super helpful.