I was just going to make the same point. Enclosure does establish a relationship between the mast area and the antenna nodes.
I’m not particularly set on this method of mapping masts and antennas. One of the downsides is that it uses some arbitrary spatial separation to keep the nodes from stacking on top of one another. In reality, the antennas might be mounted on different sides of the mast but that’s really hard to verify without a survey.
On the other hand, I have used this method to map broadcast sites and it works fine in practice. It really helps to keep all the information about the individual features separate.
That said, there might be other ways to do this. And this is a good place to have a discussion about the relative merits of possible approaches.