First I will start to say I am a complete noob about WE, as I am just making a small map about the siege of lordaeron by the horde and I can't barely make a quest.
Still I've an idea about a different Second War; the premise basically is: what if Lordaeron (continent) was not at peace when Stormwind fell?
Lore-wise, when Lother lead the survivors of Azeroth to the north, he would a find a plot-convenient continent at peace that could form a united front against the Horde. But what if the Azerothians found say, Gilneas and Dalaran at war, Stromgarde and Quel'Thalas dealing with a troll crusade spearheaded by troll mages while Lordaeron is containing a noble's uprising in Stratholme.
The Alliance is still formed but much different as well weaker composed of Kul Tiras, Lordaeron, the survivors of Azeroth, Khaz Modan (Ironforge and Gnomeregan both) and the traitorous Alterac. This of course would lead to a much bloodier Second War but it would make a good campaign.

Still I've an idea about a different Second War; the premise basically is: what if Lordaeron (continent) was not at peace when Stormwind fell?
Lore-wise, when Lother lead the survivors of Azeroth to the north, he would a find a plot-convenient continent at peace that could form a united front against the Horde. But what if the Azerothians found say, Gilneas and Dalaran at war, Stromgarde and Quel'Thalas dealing with a troll crusade spearheaded by troll mages while Lordaeron is containing a noble's uprising in Stratholme.
The Alliance is still formed but much different as well weaker composed of Kul Tiras, Lordaeron, the survivors of Azeroth, Khaz Modan (Ironforge and Gnomeregan both) and the traitorous Alterac. This of course would lead to a much bloodier Second War but it would make a good campaign.