The Greys was needed far more then building a rag time army to face the horde.. Our group consists of two Greys and seven 'volunteers'. Not much to fight Darkspawn,do dirty work for the Dwarves, save a city twice, help the Dalish, locate ashes and take on some side quests.
The Orlesian Greys did send a spy to check things so,there was interest in the blight for many reasons..
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Here's what should have happen.
After receiving a plea for help from the Ferelden's remaining two Greys the Orlesian Greys could have sent several dozen men to help end the blight. Loghain's Army was to busy fighting a civil war and had suffered heavy lost-even Howe mention the fact Loghain may not have enough men left to fight the blight. Recall the Greys are a neutral force the swears no fealty to king or country. Their only claim to fame is ending blights and killing Darkspawn.
In the mean time the group would continue to fight Darkspawn,save Redcliff, do side quest and save the Circle of Magi,save Conner,save Arl Eamond by finding the ashes and the Dalish.. The Dwarves could settle their own problems-unless a dwarf warden is used..
I blame Alistair and his bullheadness for not sending for help.. He had a highly skilled bard at his disposal.
Of course its just a fun game but, could have been different and followed GW policy..