I love that you take the time to put in so much attention to detail. But this is really about vertical rhythm. Robert Bringhurst neatly covers this in The Eleme

I love that you take the time to put in so much attention to detail. But this is really about vertical rhythm. Robert Bringhurst neatly covers this in The Elements of Typographic Style when he says that the text should return to its rhythm after interruptions (for example, subheadings, blockquotes, images etc). I also find pretty hard to come up with a scale that is neatly divisible by the baseline and that it's a lot easier to use margins to bring things back into line.