The Header Builder is great, but is missing some usecases.
  1. I have a Hero section and a transparent Menu (white Logo and white menu links)
  2. On scroll down the menu is vanishing
  3. On scroll up the menu is visible but then iam maybe on the bottom of the page and dont need a transparent header because iam out of hero section and reading the content. On Scroll up i want to change the background-color, the logo (icon has colours now) and the menu links color to black.
If i create another header builder to fix this in some kind, the DOM for Google Pagespeed is increasing extreme because of the whole navigation is doubled and on a page like "breakdance.com" or a website with more links in it, its not good.
Another usecase is to have only 1 menu for a sticky header navigation and the same for a mobile sticky bottom navigation, like from a onlineshop or i think its on facebook app...
The DOM length is on more complex websites always a problem with google pagespeed.
best regards