The thing is that it seems like the trend is to have several shorter texts in the book, from about six lines to about half a page (both for beginners and intermediate). When I teach I prefer longer texts (which also are easier to assign as homework). They do not necessarily have constantly give new information, I like when they say the same thing in two different ways, but I prefer texts somewhat longer, say a page, a page and a half.
Another reason for me preferring longer texts is that I can see that my students starts reading things like the newspapers, both the student newspaper and ordinary newspapers, even though they are just starting out on a course. Either their passive knowledge for written language seems to be way better than I give them credit for, or at least they attempt to explore longer and more complicated texts in their spare time. I have asked them, usually they do not understand much, but this does not deter them from reading about the financial crisis in Portugal - in Norwegian. So why does the textbook-writer put of their users with short texts, and leave them to seek out the challenges themselves?
So my question to you is whether you as a language learner prefer long texts or several shorter texts in language textbooks for beginners and intermediate students? (Am I just weird?) Do you prefer dialogues or narratives? What does your perfect textbook look like?