I think we need to approach this on the basis of plot and character arcs.
What purpose is served by bringing Beck back? After all, his purpose is to serve as a stand-in Stark/Ben/brother for Peter. One that betrays him, as so many of Parker's villains do. Peter failed Uncle Ben; he made Stark proud, but still lost him; he looked up to Beck, but had to go against him for obvious reasons.
Peter, in this universe, has lost all of his male role models, save Happy, who came through big in this one.
Meanwhile, bringing Vulture back forces this Peter to confront his origins. That has merit, unlike Beck, who ran his course.
I still say do a dual-villain Lizard and Kraven. Kraven hunts Lizard, Peter has to save him and defeat Kraven, thereby finally rescuing and rehabilitating a father figure. He learns that he can save someone, someone who can aid him. It boosts his confidence, if only to take him down a peg in a future entry, (with, say, Doc Ock?).
I really, really, really want Holland to have 6+ film arc. He could be the definitive film version, with most of the major rogues gallery present, all of them feeding his character development before culminating in a Sinister Six (with Vulture being a candidate thus far).
