I would love a guideline, like michelle says, with the clause that it could be increased or decrease
If I'm trying a new recipe, and have no idea how it's supposed to taste, I would love to have a starting point. Then I could adjust upwards or downwards, if the recipe were a keeper, to sui my taste.
And bread is such a intuitive thing - it would be great if we had someone next to sue to tell us what is too firm or what is too soft, but if we have to rely on the printed word, starting measurements are good.