ASA rule for submissions:
15-35 page draft paper/working paper either converted to a PDF file or prepared as a Word, or WordPerfect document stored locally and ready for uploading.
This is new, right? Didn’t it used to be 20 pages, without anything to imply it shouldn’t be a fully complete paper?
My preferred belief is that this is a new change and that, regardless of whatever story exists about its provenance, blog & Twitter whinging helped bring it about (e.g., here). But I’m open to counter-facts and counter-narratives.
In any event, regardless of why, kudos to the organization for the change.