For an orc, life is war.
It is the sharpening of weapons on the bones of one's old enemies. It is the slaughter of wild beasts, to turn their hides into armor and their skulls into goblets. It is fiery sex on the eve of battle (and then again, upon return). It is an eternal, unending war. The dream of a single realm under orcish dominion is impossible, because it is not that dream the orcs ultimately want -- it is the pursuit of that dream. The moment they have their utopia is the moment they would shatter it. The struggle. The strife. That is what tells an orc he is alive.
This is the Good Life for an orc, because it is a reflection of the struggle within an orc. The war without is a reflection of the war within.
It is the conflict between competing feelings for duty and love, it is the lust for power and the restrictions of honor. An orc's internal conflict is as much a war as the battles he fights in the real world. A passive reality does not accurately reflect a person's internal struggles, so they can find no peace. A bureaucratic pursuit is not satisfying. A glorious war is. Chaos and order, hate and love, the conflict is beauty.
When Krug battles Horen, it's not only because he feels he has been abandoned, it is because he feels Horen's pain. Krug can tell the war within Horen has turn to ash, that the life that once animated him has been snuffed to smoke by the curse of Iblees. And so, within Krug there is a battle, between his hope to release his loving brother from living hell, and his hate for Horen's abandonment.
I don't think this should be resolved. When Krug carries Horen's pale-skinned body, about to bleed out, into the deserts, I think it would be good for us to be allowed to wonder. Is it hate that fueled his choice to fight Horen, or love? Or is it both, twisted as tightly as two anacondas focking, in a way you can never tease them apart?
It is important to remember that humans may fear death and want to live, but that an orc may not respect this. Krug may not respect Horen's wanting to live, believing that it is the foolishness of a demented mind. Or, maybe it is Krug's hate that is telling him to ignore Horen's wishes, disguised as his hope to free Horen from the hell of old-age. Who knows.
Anyway, that's my two shakes on it. Internal conflict is cool IMO. I think a fusion of this and old lores would be appropriate for maintaining server cohesiveness, then it'd seem like more story was revealed, rather than explicitly a retcon.