I don't mind- I only removed them because there was a stink when they were added, and it was resolved that they would only be temporary until it had been reduced appropriately (unless I'm imagining that).  None of the other HP books have subheadings either.  I though removing them would discourage embellishment of the plot - makes it look like it should be a shorter length.  But as I said, I don't mind.  If people want them in, then they should be there.  Sorry - was maybe too bold.