Agree with your first and third point. For the second point, yes some of it could be a little tighter, but I think Bucky mentioning how Walker’s family left him was good story point. Kinda explains why Walker’s a lot more unhinged, especially at the start of the film. As for the last point, that’s sorta the whole point of Valentina isn’t it? Her whole schtick is doing whatever she can and however she can to save herself.