(a problem with p.g./d.p. is that every post-processor makes such decisions, so the library is composed of a myriad of "snowflake editions", with no consistency.)
One can see the opposite problem at Feedbooks, where all book ARE reduced to a baseline consistency - and not made better by having done so.
[poetry] . so if you think you have a solution, you let me know, ok?
In practice what I find I do is physically rotate my ereader to landscape mode and reduce the font size to where the poetry fits - because even if the line breaks are implemented "correctly" [and they almost never are since neither html nor the ereader device really understands how to do poetry] the poetry suffers so much from the line breaks that I'd rather put up with tiny fonts while I read the poem.
and no, i'm not gonna put _presentational_ decorative frivolities in my e-books, like small-capping the first words of a chapter... if something is small-capped, it'll be because there's a _reason._
Which points out the basic problem: BB's system implements what BB wants and if some PG volunteer wants to do a bit more than what BB wants, or if a PG volunteer feels that a given book *requires* more than BB wants, well, then, too bad. Hm, but now I'm starting to make that sound like DP..