Most of it has been mentioned before already, but it looks like it's some time ago someone tries to keep this request going. I would still very much like a feature to create annotations to PDF's in evernote on my iPad. Pen annotations and 'sticky' notes would be great. There are many great apps available to make annotations to pdf's. An easy to use direct link from evernote to one of these apps (opening and saving) would also be an option of direct integration is not something that can be easily done any time soon.