It is somewhat annoying when a link's "natural title" is not good and the submitter improves it - only to have it reverted.
It is somewhat annoying when a link has a misleading "natural title" but is not changed.
In short, I like editing when it makes sense and don't like it when it doesn't. Hence you cannot please everyone with either absolute, so I would say err on the side of least effort - therefore no editing!