A part 3 only really works with a new protagonist imo. You can still weave in Abby/Lev as supporting/side plotlines
Dont really care what they do with Ellie tbh
I wouldn’t mind seeing Ellie in a supporting role, or in the background. I can’t even lie I’d still spend the money to see her end up in a Joel-ish role, even if it ends up with her being bludgeoned to death lol.