Frankly, this is why in my opinion, the advancement of the Alliance’s story should revolve around its return to the northern Eastern Kingdoms. Yes, including their relations with the Forsaken, and yes, including how members of the Alliance in Kalimdor would perceive such a thing.
To the Alliance, matters pertaining to Lordaeron are not just a geopolitical affair. They are a family affair, with all the warm love and cold hatred that family affairs can prompt.