A tweet from Ken Penders today (28 Nov 2022) reveals the Vulture suit design that would have been in Spider-Man 4!
Before Tobey & Sam were bid adieu by Sony, work actually had begun on SPIDER-MAN 4, and I visited friends who were working on the Vulture's costume intended for actor John Malkovich. Once production shut down, all materials were turned in. I've sat on this for almost 15 years.