In a recent interview with the actress Charlize, Teron told whether the audience will see a crossover "John Whitch" and "explosive blonde". Theron answered the question like this:
Listen, as soon as I get a call, I immediately go. They just need to say where and when I need to be, and I will be there. Keanu is one of the most pleasant people in the world, I adore, respect and admire them. Everything is grateful to the fate, which managed to play with him in two films. We both seemed to re-found themselves in these projects, and the "explosive blonde" was made under the great influence of John Whitch. If it turns out to bring these characters in one movie, then I am entirely for.
Both films binds the figure David Litcha. It was he who removed the first parts and "John Whitch", and the "explosive blonde." And he did it successfully - the franchise with Keanu Rivz lived to the fourth part, and the "explosive blonde" will receive Sicvel on Netflix.
A possible problem in creating a crossover is a timeline. The action of the "explosive blonde" occurs in the late eighties of the last century, and the Events "John Whitch" unfold today. Therefore, the overall project should be prequence to one project and the continuation of the other. But if someone succeeds in bringing together two proven franchises, the new project will be doomed to success.
The two Mentioned Teron in an interview with the joint film is the "Devil's lawyer" and "Sweet November".