At least the other ones shouldn't be as dark, considering the only ones left (as far as I know) are Party Thor, Gamora-as-Thanos, Killmonger saves Tony Stark, and Ultron gets the Vision's body (in no particular order).
Gamora-as-Thanos could be dark (not sure what that's about), but I'd think it would require a major twist to turn Party Thor or Killmonger saves Tony Stark into apocalyptic events. Ultron getting the Vision's body might be bad, but I'm thinking that's when the multiversal team-up happens (since we've seen the Avengers circle shot with T'Challa, Thor, and Gamora, as well as Captain Carter meeting Dr. Strange), so at least that episode won't end on a dark note.