12 Ways To Make A Hulk Movie That Doesn't Actually Suck
8. Bring In Kraven (And Spidey)

It is surely only a matter before Kraven appears in a movie (you know, a legitimate one, rather than just Jumanji, which ripped him off rather shamelessly). There are some pretty exciting rumours that he could actually appear in the Spider-Man stand-alone that follows Civil War, and if that is the case, Marvel should think seriously about retaining his services for a Hulk movie.
Kraven's selling point obviously is his blood-thirsty need to hunt rarities; it's that compulsion that drives him so hard after Spider-Man, and his pride as a hunter that keeps him coming back. Imagine his reaction if he encountered the Hulk while on the trail of Spider-Man.
The best way to pull off a shared Kraven story would be to introduce him in the stand-alone Spider-Man "reboot" without having him as the primary villain (that has to go to Norman Osbourne, no matter how much people complain about a lack of variation). He could then expand his hit-list when he learns of Hulk, leading to his primary villain status (perhaps alongside Thunderbolt Ross) in Hulk, making for a chase movie that could still fit in with Hulk's exile away from highly populated areas.