The problem with "sane" editing is, that it is much more difficult to enforce than just a simple - always the original headline - rule. The story here is an exception as it is a personal interest theme. But as soon as we are in more subjective terms (e.g. "writing up" the successes of a project) I can imagine many comments discussing if the spin on a headline is still okay or across the line. Plus if somebody is convinced that the original story absolutely needs the editorializing it might be better to express this not just in a headline but to write a blogpost etc on it.