I think what people like about Lunsen is that everyone will have an experience of getting totally lost on it.* But they also, eventually, have an experience of having a really good run on it. That feels good.
My impression (I've run on it maybe a dozen times) is that you can develop a "feel" for the terrain and the type of features that will stand out.
*My favorite Lunsen experience is from a night O' training on a cold, icy night. As you crossed a marsh you'd break through the ice every few steps. When I finished I felt very satisfied to have completed the course.
I actually think I like Pawtuckaway and Lunsen for similar reasons: very good maps, very challenging technical orienteering. Even very good orienteers will get confused on both their first time. But a great run on each feels amazing.