Maybe nature and cell and a few other journals should be exceptions: they should be the place that the most advanced scientists publish interesting ideas early for the consumption by their competitors. At that level of science, all the competitors can reproduce each other's experiments if necessary; the real value is expanding the knowledge of what seems possible quickly.

(I am not seriously proposing this, but it's interesting to think about distinguishing between the very small amount of truly innovative discovery versus the very long tail of more routine methods development and filling out gaps in knowledge)