The "Digital content" / "My downloads" section of the page could use... vast improvement. There have been a few statements suggesting it's work in progress, during the last few years, but appearantly there was no major change.
Maybe a complete overhaul is simply too much of a project. In this case, splitting it into small improvements would help incredibly. User's life could be easier even with just a consistent order of "File Per Chapter" and "Single File", by stripping repeated "Paizo Adventure Path" entries in each line or by starting downloads automatically, after watermarking.