So I'm re-reading JMS' Spidey run, and noticed two funny things that predicts some elements of Immortal Hulk.
First we have what Ezekiel says in ASM#49 vol 2:
https://i.imgur.com/apzEXLh.png
Emphasis on the third panel, where he says that the paranormal is everywhere, and mentions Hulk as an example.
Then a few issues later, a new villain is introduced, Spidey investigates, and finds out about this in #52:
https://i.imgur.com/BaXUcKJ.png
So, ASM had Ezekiel mentioning that there's a magical aspect to Hulk, and then we had a bunch of people being resurrected by Gamma radiation as one guy, funny how comics can be somewhat prophetic lol.
Just pointing out the coincidences though, because the story with this gangster is still scientific, and the guy does die in the end.