I think a lot of the major structures are going to look mobile. From what Smed said long ago they are "landing struts"
I suspect their long-term plans are to make it more sandbox and allow some (or all) of the facilities to be deployable. They might even be destructible.
Lots of things they can do with that, but if they look like they're mobile then allowing outfits to drop a facility or tower somewhere for a limited time is a bit more believable and makes more sense if the structures themselves look like they can be deployed.
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