Some quests do take a while... In this case even longer than the completion of my Gray Death Legion, which took me about 5-6 years. The Falcon Guard is another thing: I started the trinary back in the mid 1990s, when I bought the scenario book "The Battle for Twycross".
Now with the second Stormcrow I have finished this quest. Last things to do: I need more Elementals and of course the Jade Falcon decals, which I ordered today at Fighting Pirannha.