Yep( Last year i just wait update for my armies for aos and 40k because of new battletomes for other factions.... Very hard play for ironjawz or bcr when all other factions in local club have new battletomes (
I really hope, GW will release something for destruction soon, but after they released card for BCR, ironjawz and bonesplitters with last ghb, i think we will dont get update for this factions....
Any way it's no problem for GW to make same mechanic like CYPHER in 40k with IMPERIUM and CHAOS keywords in same warscroll w/o make major changes. But i dont think what deepkins will get GA keyword expept Order.