I feel Shocker can work. Just thinking more and more, if he had a team with him like Scott does in which he does heists, what if Shocker for example was the leader and the distraction? With the arrvial of Spider-Man, they need to up their game Shocker feels. So Shocker steals a crate of tech from Oscorp or Stark that contends the electric gloves he uses.
When they do a heist, Shocker stays far enough away from that so even if Spidey knew of a heist happening while fighting Shocker, he wouldn't have enough time to get there.
This could also work well with the Daily Bugle as they would have "SPIDER-MAN FAILS TO STOP HEIST".
I don't know, I think I have some really good and different ideas that could work well on screen. I mean I think The Flash has done Flash and Captain Cold well in that show. I think Shocker could work really well on screen if you have that direction. Sure Shocker seems like more of a side character but when you think about it, so does Electro and Rhino and other Spidey villains. Outside of Doc Ock, Green Goblin, Venom, Carnage, Kraven, and Mysterio (also Kingpin if we're counting him), there aren't many other Spidey villains to take the spotlight for the film.
I mean basically what I'm getting at is we all know Spidey's story would work well on screen. I'm really making Shocker sort of like the evil Ant-Man who uses tech, steals, and has a team he commits heists with. I really think something could work. Sure it wouldn't be as great as the first 2 Raimis but it sort of feels like Batman Begins in a way since that film was all about showing Batman's beginning roots like the direction I'm kind of doing having Shocker be his first villain.
I can tell you likely haven't read Spidey comics with Mysterio.
Ultimate Mysterio is 616 Mysterio.