I would really love to see them cast Channing Tatum as Eddie Brock/ Venom in Amazing Spider-Man 3 with him working out as Peter Parker gets the better Spidey photos. Maybe it can just be an after credits tease, with him bench pressing. Just like the comics. Also let's list the potential characters that can get solo films:
The Black Cat
Morbius (we now know Sony has the rights)
So, I think Sony has got some legs on Spidey universe if they set things up correctly.