The Day Hope Survived (AU)

We all know what happened to Silvermoon during the Third War. Arthas came with his hordes of undead, tore the lands apart, ravaged the city and its people and corrupted the Sunwell. Ever wondered what would have happened if he didn't even get close to the city and was pushed back into the Plaguelands? To be fair, probably not. But I wanted to write what I think would have happened!