Now if you wanted to do something really useful (for me at any rate), how about a way to make a left and right page independent?

When I have done books in Xara, because I don't have the ability to have separate left and right pages, I have had to center the text area on the page. Ideally the left and right page will have different outer and inner margins. Presently, if you move all the text areas on the left pages using the apply to all paragraphs, it automatically moves all the text areas on the right pages the same distance. I have begged for this for years but to no avail. Because nobody at Xara has ever produced a book I suspect.