While they are cool, and give a great impression of the nature of the area they are pretty pointless in the game. Same with many of the other ruins and things.
It would be cool if we could rebuild and resettle some of these places.
As for the ravaged towns I'm thinking a seven samurai situation. Rebuild the town and try and help the farmers and such to hold off the holy nation raids. I would not expect the town to become my property as they are the property of the UC, but It would be cool to be able to rebuild them and help repopulate them. I could then purchase a house in town and live there.
To that end I was also thinking that there is a new type of building stat that is needed. "Housing" Just like setting a building to public or private, if you build a building and set it to "Housing" then it would attract one settler for each bed that you build inside. This would allow you to rebuild the destroyed farms and attract a population back to the area.
Other areas I would just like to rebuild and take over and suffer the consequences. Like one of the ruined mines, or one of the ancient ruins. If I rebuild either one and made it habitable I would expect the former owners would then want it back. Be they HN or Iron spiders. And I would have to deal with that problem.
So the summary, be able to rebuild ruins we find and inhabit them, add a housing building status to repopulate rebuilt towns and defend them.
I know I don't ask for much
Thanks for the great game.