Well first, as noted in the linked post, i am expecting to at least be able to preview in layout whatever colors and print widths i have set in both projections and sections (and hatches given the option like we suggest).
So yes, regarding hatches i support your suggestion because its not only the color, but also the print width. At this point in many styles only solid hatches can be used, because all other hatch styles (grid and/or other non solid patterns) plot to thick in case of lets say a wall style that has a thick print width.
Hatches have some draw order issues too. As seen in the linked post and others, many times their draw order is messed up obscuring curves. This has been solved by Asuni team, but i am still getting random pdf plots with messed hatch draw order here and there.
I am trying to apply live plan and sections in our workflow, and avoid if i can VA Plan and Sections. I also tried to come up with a solution in gh to automate en masse style and/or other changes, but end up facing this bug at some point.
Well, lets wait and see. I feel confident about VA crew, they keep improving things and many times are head of Mcneel, showing the way how to solve issues.