Space is the ultimate fundamental; the most ubiquitous “thing” there is. In fact our brains generally perceive space as the “nothing” between the “things” they prefer to fixate on. We move through this silent, invisible, three-dimensional emptiness with very little resistance and rarely think about it at all. So is it any wonder space is an often-overlooked element of design, appearing almost by accident between the bits we spend our time carefully crafting?
A quirk of composing type to a scale is that a larger ratio will translate to larger font size jumps both above and below your body copy size. This means any text smaller than your base size might end up smaller on a large screen than on a small screen, which is generally undesirable.