That's great, at least for massive, scorched-earth file loss.
With my most recent loss the were missing folders I wanted back, but other items I deleted earlier on purpose. Even in the mistakenly deleted folders were items I didn't want.
I'd be happy if there was a way on the Web site to either select "Restore entire folder" or check off files in a folder and opt to restore all selected.
My impression skimming through the help files on this is that you ask to have things restored to a particular event in your Dropbox event history. There would only be a problem if there were other items deleted later on purpose.