Going by numbers, Alornis' organization seems to be the third strongest on the Horde behind Sunguard and Dominion. I would imagine, IC, that allying with either is a mutually exclusive thing -- like picking BoL or LoL. If push came to shove, which organization would Alornis back and why?
Thankfully, Alorinis doesn't have to choose between Sunguard or Dominion as in Quel'Thalas we're all allied by the nature of our goal being to make Quel'Thalas more power. There isn't really a strong line of choice we each have to make that seperates us; though with Quel'dorei involvement becoming larger that could make the line.
If push came to shove, and for some reason he had to choose only one, Alorinis would choose to ally himself with Archon Felthier. While he has served with and under both Felthier and Tendael, he has never served with Tendael II. The fact that he hasn't been able to prove himself hampers the boy in Alorinis' mind, as he would rather trust the regiment and Quel'Thalas to an assured power. Now, that could be subject to change after he has seen Tendael II in action and if he is anything like his father.
But, thankfully, that isn't a choice he'll most likely have to make anytime soon.
And since you mentioned BoL and LoL, I can answer that too because I do often ponder the idea of an alliance between a Human owned Lordaeron and Quel'Thalas.
Now, the issue itself would be a hard one on the most basic level, Alorinis truly believes Lordaeron belongs to the dead and not the living. But, let us say the powers of the Lordaeron reclaiming forces thwart the Banshee Queen and retake all the lands.
Alorinis would most likely side with BoL, but that is because he has never met Madelynne or anyone of the group that follows her claim to the throne. He has however met Kerdic and Demetria, and he does not trust in them to keep Quel'Thalas at its safest. He'd believe that them there would outright spell war, but Madelynne could possibly not call for war.
He would also weigh in the fact of the relationship each group has with Berenal Greymane and Johannes Moorwhelp, as Alorinis especially considers those two the largest threats to Quel'Thalas that the Alliance has.
But, Alorinis is old and not going anywhere. He also knows that even if Lordaeron is reclaimed, Madelynne or Demetria are merely Human and won't last a century where he will. Perhaps he will wait and work to get an Elf on the throne, and take Lordaeron into the lands of Quel'Thalas.
We'll make a commenorative bust of Madelynne and Demetria.