Than the epub standard as it exists. I guess I don't understand what the advantage here is, really. If you want to make an epub file that works universally, you

Than the epub standard as it exists. I guess I don't understand what the advantage here is, really. If you want to make an epub file that works universally, you can do that, within the existing standard. If makers of reading systems and software would actually support the full standard, which they currrently don't. If you don't want to use pdfs, don't use pdfs. pdfs get used for a lot of things they aren't actually very good for.