The King Arc comes to a close in a rather "big" way that will kind of not really mean much in the future. That is, King makes a sacrifice to destroy the DC headquarters, and the remaining Oracion Six members within it, but... I'm pretty sure they're still around. And the manga indirectly introduced the next major "boss" enemy here as well, who definitely has ties to King....
I kind of feel Gale Glory dies in a silly way, honestly. Like, anyone can die from falling rocks. You survive the battle against King, and he removes End of Earth from you so you won't trigger another Overdrive, then you die from rocks. It reminds me of the minor controversy of Son Goku being hit by a laser gun in Fukkatsu no 'F'; we're used to characters surviving impossible battles in shōnen manga, so it's just kind of dumb when they get hit by weaker shit. I don't know.
There are a few times here where Haru looks closer to his spiritual successor Natsu. Like, Mashima's style is coming into shape.