Originally Posted by
Friendlyimmolation
The forsaken like using the blight because it ensures the humans would leave. They expressed disappointment in south shores case that they wouldn't be able to live there now. I haven't seen anything about forsaken farms, but that would be a interesting .
The forsaken turning lordaeron into a breadbasket. Since they don't need to eat at all. They export massive amounts of grain and become the hordes main food source, or if they were malicious they could also supply grain to the alliance and create a gap between people who want lordaeron, and people who wouldn't want to invade because the food would stop coming.
End of wishful thinking/headcanon.
But yea, forsaken want to restor blighted land to live there, they use the blight as a pesticide.