Agamon
Adventurer
Nah, I am using a 10" tablet, same as you. I do find it annoying that the pdf always uses less than 100% of the screen area (Letter being the worst format). For a pdf in letter format I have to zoom and to flip between the pages without resetting the zoom I have to use the volume buttons. The pdf's are completely useless on my 4.7" phone though, which I used until I got the tablet. It worked great for books, but doesn't work at all for pdf's. A epub optimized for 7"+ tablets should be ok on the phone, but instead we get pdf's that are completely useless.
I don't think tables have to be a disaster, but the reader have to support things like header columns and such. I don't know how good that support is. The same goes for the images. There is no reason images don't work well in epub's. That's probably just lazyness from the epub creator.
How odd. I have no need to zoom on any gaming pdf (or book or comic) that I read on my tablet. I'm not looking at it right now to say how much screen real estate a page uses, but I'd be surprised if it was less than 90%.
This is the first complaint I've heard regarding this. Maybe its the pdf reader you use?