I understand about the visual editor and I don't expect PP to create a new style editor. However, a few guides would be helpful.
The problem, to me, is that the CSL library includes 8000 styles that are maintained by an army of volunteers. Fine in theory; no so great in real life. Last week, I was editing an article destined for the American Journal of Medical Genetics, Part A. This was a style, listed by name, which I found in PP. Hooray! But when I tested a few sample citations, I discovered that it was not congruent with the specifications in the "Info for Authors" for the journal. And, the info for authors was very clear: manuscripts with citations and references not formatted correctly, according to their guidelines, would be returned to be corrected.
So, I had to delve into the Visual Editor to fix the style. It took me 3+ hours to change about 5 fairly small and simple things. It took a lot of trial and error, clicking, saving, uploading, and then trying again. Eventually I did have the citation style correct--but I could never replicate what I did (easily) nor could I explain to someone else what to do. And, my copy is my own local copy while the version at CSL is still the outdated, incorrect style--meaning more work for the next person using PP who encounters this journal.
I agree, having to deal with this sort of minutiae does not advance science and is a giant time waster. As an editor myself, I am trying to raise awareness about this issue, in an effort to achieve some level of standardization--probably an impossible task, but we all have to start somewhere.