It is important for us to limit the amount of settings, some which may cause confusion for average users. First of all, you are entirely correct about the importance of the <title> tag, and that is in fact why the
title: setting is the only strictly required setting for each page. In fact, the primary use for the title setting is to set the <title> for your page ... Setting a content "header" is basically optional, but a sensible default, especially since it is of SEO importance that the <h1> tag is similar to the page <title> ... Google has announced much recently that your titles- and text should be made for "humans", and not fabricated for the benefit of SEO, something which is integrated into their algorithms.
You can easily work around this by simply not displaying the optional title- and description in the content area, and instead adding them as you see fit directly to the content. By default, context displays
title,description,content ... but you can easily set it to only display
content, for example:
context: items:content
...
content: |
<h1 class=title>My Custom Header</h1>
<h2 class=subheader>My optional custom subheader here</h2>
More content ...
The setting implied above
"context: items:content", could even be applied to your main settings under
page.context so that it is default.
Another reason we don't want to add an explicit setting for the content header, is because many galleries will not be using them anyway, and instead just showing the gallery directly with no text (basically like Imagevue X2).
Basically, the CONTENT section defines any page content which displays on the page (above the gallery if you have images on the page), and you can add any html you want, including header tags <h1><h2> etc. The default auto-inclusion of title+description is just helpful default combo, which happens to look nice.
I have noted your request, and will give it another think, but it is very important for us to not add additional settings just for the sake of it. As you have understood, the gallery: and folders: settings already include tons of possibilities, and if we were to add all of them as a separate settings, it would become incredibly crowded and dysfunctional ...