hm, the distinctions you’re drawing here will make less sense once you get into the weeds a bit more.
Can you give me an example of this kind of page? Yes it’s true that the landing pages plugin doesn’t include the discourse nav items and user menu, however if you want those in a page, it’s best to create it for each specific use case within the Discourse app itself on a case by case basis. Trying to recreate them in a landing page wouldn’t make sense.
The reason there isn’t a generic way of doing this is because there isn’t a generic use case per se. There’s a number of approaches you can take, the best one will depend on what you’re looking to achieve. It’s best if you lay what you’re trying to do in more detail, then I can give you more specific advice.
Start a new topic in #dev or over on Discussion - Pavilion explaining what you’re doing in detail and @me.