I would like only two extra features or upgrades. One is pdf text Reflow and font size enlargement as in pretty much most apps such as Adobe reader and Pocket books. This will immediately make pdf reading even more immersive and tactical for note taking. Custom styles for background color such as Solarized template or Zenburn would be great as well. Lastly, the Research dialog closes automatically after a pdf download which gets annoying in case I want to download others from the list.
Thanks for such a wonderful app.