Excavation & Restoration Feature

A number of the structures in the game are damaged, or buried. Similar to how the Flame Altar locks in terraforming alterations, I would like to see a feature that would allow you to, for example, “lock in” your efforts at excavation of, say, the vault the Carpenter is in. By this I mean, it is possible with the pickax (or explosive power balls/grenades), to expose the buried walls that are indestructible.

I would like an aura around these buildings that makes this permanent, up to a certain distance. The distance should be far enough that if you're looking at the thing from a distance and the right angle, you could more-or-less see the entire building cleanly.

Similarly, I'd like the option to place a Flame Altar in locations, such as ruins of towns, and use various forms of wood or stone to REPAIR the buildings, locking it in as a permanent transformation only once the entire area is restored. That is, the town is restored to active status and survivors can live there, again, once you've restored it, and the Flame Altar is removed from your list of active altars but remains something you can fast travel to because you took the time to restore it.

This should also be an option for the ruined fortress-type places in the game, allowing the story to position the Flameborn as, in essence, a human phoenix, restoring civilisation throughout the region via their efforts. This should, mind you, be a side quest, in my view, not actually required to complete the game - but something that people so-inclined could still do, if they want.