I encountered an interesting piece of software last year, SiteCrawler by Lighthead, and while it is a completely different kind of application, it has one method for downloading authenticated web pages that I wish was available in EagleFiler
SiteCrawler can integrate with Safari’s cookie cache. You can log in to a website via Safari (e.g. Facebook or the New York Times), then run SiteCrawler and it transparently uses Safari’s cookies while loading the pages. See their homepage section “Safari Integration.” http://lightheadsw.com/sitecrawler/
I’m not sure how complex this would be to implement in EagleFiler practice, but it seemed like the kind of elegant solution that EagleFiler would use, so I’m mentioning it here as a future feature idea / request.