I thought through this alot..
I got this idea about adding abandoned lairs in the large blight areas, (Northern Deadlands,Eastern Deadlands, Western Deadlands..) the lairs wouldn't buy able by anyone . The lairs inside would have some undead walking around and a ghost dragon with high hp (depending on the level area of course). The lair would look abit destroyed too.
But also, inside the lair you could go to a broken/destoryed part of the lair and you could gather from it and you would get this broken lair material, and if you had the formula for it, you could remake it into fixed lair material. (Alot like the broken scales)