Marked as Off Topic, since it's just a curiosity: are there any security-related reasons as to why PDF Viewer does not have a Document outline (Table of contents) menu and also no continuous scrolling between pages? Or is it merely a design choice, just to keep things simple?

7 months later

I've also been wondering about this. I'll often open files for reference material and instead of scrolling until I see the page I need I have to tap furiously until I get to the right page.