What would be wrong with a hosted PDF? - no links - doesn't resize to the window - no headers, footers, menus etc. - different pages don't reuse common font

What would be wrong with a hosted PDF? - no links - doesn't resize to the window - no headers, footers, menus etc. - different pages don't reuse common fonts or images, making it slower to load - proprietary format Anything I'm not thinking of?