I liked that Khonshu had power absorption as an ability because said ability is present in his mythology (stealing godhood from other gods and giving their powers to mortal humans) but at what cost! Other fans thought Marvel was shilling Moon Knight (when many tvtropes examples show that the 'power copying' ability is extremely useful) but the characterization made it seem like the writer didn't want to use the MU characters just (his take) on Egyptian mythology and ruined everyone as a result.
That is pretty much what Jason Aaron does.
I mean, the whole thing has cool ideas. Power Absorption is even mythologically accurate if we remember Khonshu's era as Khonshu The Cannibal (which was when he'd take lesser God's powers and give them to his favorite humans, long before he became the Embracer, the Defender and the Protector of the Travelers of the Night) so it could've been interesting if, say, someone was controlling the heroes and it was necessary to take away their powers. NOT just making Khonshu evil for the sake of being evil. But he didn't do anything with those ideas, just had Marc act as if he didn't have two braincells to rub together, and completely forgot that Marc is NOT a single person in that body, not even checking what was going on in his own title when he put it in Avengers (Which, again, is something that he does A LOT. See again: She-Hulk)
It's weird that they thought Marc was being shilled because sure, he did defeat everyone at first but then they had T'challa beating Khonshu in hand to hand combat.
T'challa, a Superpowered human whose powers put him in the "heavy bruiser but not really cosmic league" without ANY armor or special extra addition, managed to fist fight a GOD who at the time was handling Mjnolir, the powers of the Eye of Agamotto, the Iron Fist AND his own godly powers. Not only that, but had Mjnolir act like an overeager puppy around T'Challa.
I love Black panther but in any other situation? We'd be calling that a Mary Sue.
But the worst part is that there was no payoff. As I said, the Avengers are STILL dealing with Mephisto, almost 20 issues later, and nothing has been advanced there. Moon Knight had a very annoying pause in his storyline of one year due to Devil's Regin, and even then, the pause made NO sense as it picked up right where it left, not referencing ANY of the Devil's Regin events, making it look as if they really didn't need the boys, just someone dressed as Moon Knight. Which is frustratingly what a lot of writers do when putting Moon Knight in ANY team book.