Please add the Zoom Lock feature and built in orientation change feature. Adobe Acrobat lacks these two features to be a fully featured reader, just believe me.
panos lag commented
I would prefer viewing my documents/books in "page-by-page" viewing mode instead of "continuous pages". The problem is that most documents do not exactly fit my screen ratio, or even if they do, a bit of a zoom-in is required so that they are more easily readable. It is kind of tiring to have to zoom-in every single page.
I also believe that a "zoom lock" function would help.