Knowing how the team always gets screwed over, would it suprise anyone if they made Walt the lone survivor a Skrull and/or retcon Mac dying as a Skrull himself and he really didnt come back (over and over again).
Or worst yet, Skrulls didnt find any use for the great north and Alpha really did die. I would actually take the later as more of an insult since Marvel made Skrulls infiltrate all of Marvel except Alpha