Most things in Archaeology were made with the plan to use them in future content. The dig sites themselves, or content within them such as the wingsuit.
We did have crazy ideas for how we could expand areas in future updates over the years. If you take Stormguard as an example you may notice the rings high in the sky as well as the take off platform to the west of the workshop. Quite an ideal location for a potential agility course/training method!