I think it depends on the backups. Im not sure how much is missed because I see very little gathering of info in communities. Like the reddit sto forums main value was in the sidebar and faq which listed all sorts of links to resources and faqs. If you wiped the whole thing but had those backed up it would allow anyone to quickly get into the game and the community could converse and answer questions not in the faw or resources that maybe would get integrated if it was important enough. Most communities I come across here you look at the sidebar and it does not even explain what the community is about. This one does but its not to common. So if the person or persons who mind this one have a backup of the sidebar then its good to get it going on a new instance if needed.