I find this to be one of the best apps, being a scientist. I use it constant and it really helps to stay organized. One improvement I would like to see is some automatic removal feature from the iPad. As I continue to read papers and download them to my iPad mendeley will start to take up a ton of space. It would be nice if there was a feature that automatically removed files from iPad storage if they havent been read in some period of time unless they are starred or something.
Earinfection about Mendeley (PDF Reader)