This is the inclusion that still puzzles me to be frank. He's not a good fit, I'll still take him over Rhino, but there's too much conflict here for me to buy. I just can't picture him calling a truce with the others and set aside his scheme of turning everyone into lizards, just as much as I can't see the others not realising it would be much more convenient to kill him because he'll always be a potential threat.
It's a shame as they have effectively sidelined both Vulture and Scorpion who seem like more natural S6 members. Hopefully the concept of a more ideal team isn't skipped and maybe Ock and/or Goblin can recruit them later.
Though I have to wonder. Is Ifans even returning? I haven't seen anything indicating he might and it's not unknown the contempt he has shown for comicbook movies and his role as the lizard. Perhaps they could swap him out for Dylan Baker? On the other hand perhaps they've gone with a less intelligent iteration of the lizard who has no lines and there is no Dr. Conners present in the movie.