Its relevant, because I really dont see your motivation for why you really care elsewise.
As for those...K2 hasn't seen much reason to Crusade against the Aralangs, only the SF in the past. In fact, as I recall, he even went so far as to remind everyone that the conventional Aralags weren't the enemy. I think that was him, anyways...Point is, you need to worry about HIK going against the Aralangs, since she actively hates tech(well, technically, she currently hates EVERYTHING, but not the point). In fact, considering he'd have motive to go against the Garelangs, well, 'The enemy of my enemy is my friend'.
You wouldn't lose him, because he had been merged with Fatet. From how I understand it, Fatet was using him as a puppet to remain the embodiment of Fate eternally, just hopping between the bodies of its successors? In any case, you wouldn't lose him, because you wouldn't have 'had' him in that first place. In his form at that time, you wouldn't have had that asset, unless Im understanding all that TOTALLY wrong, to which I'd need K2's confirmation.