selective sync on ipad?

Whatever the correct term for it is, the underlying issue is there needs to be a way to mark entire folders (with subfolders) as available offline in iOS, not just individual files. With hundreds of work files that I need available offline on my iPad, it takes me FOREVER to mark them all. And I have to do this every two weeks because the files I need change. Since all those files happen to reside within a handful of folders in my dropbox, this could all be done in .01% of the time with half a dozen clicks if entire folders could be marked as offline/automatically downloaded/synced/whatever you want to call it. Please do everything you can to add this function.