Great! The only part of my workflow which I have not been able to easily sort with Paperpile is the creation of quotations/notes on PDFs I read on ipad (my preferred reading device). At the moment I sync the starred papers directory to PDFExpert and when finished export the annotations into an html file back into that same directory, then manually copy/paste into Paperpile notes field.
Ideally I would love it if any highlighted text could be made automatically available as a note, much as with happens in Sente for iPad. It would also be super if it could have some awareness about page numbers in the reference - for example I have a number of PDFs that are journal articles whose actual page nos are e.g. 456-487, and while some platforms produce properly numbered PDFs so that the PDF viewer maintains that pagination, many simply have the numbers 1-31 and thus everything has to be manually changed later to associate the quotes/notes with the correct page.
I also endorse the styled text option for notes, once again I like to highlight quotes in PDFs that I might use in a paper and being able to retain italics from original easily would be most useful.