Though Venom 2 doesn’t need to be the next Friday the 13th, the promised horror aspects of the character should be explored further. With the first film establishing the grotesque shenanigans the symbiotes are capable of, seeing them run at their full sinister potential is sure to enhance the overall atmosphere of another film - so long as the comedy and horror are properly balanced out.
This wouldn’t necessarily need to make the sequel a horror film – after all, the original did have its spooky moments, just that these moments were clearly toned down for concerns they might alienate audiences. However, these audiences seemed more bothered about a lack of horror than anything else, and so there's a good chance that this will be changed in the sequel, should Sony heed the feedback.
With such a naturally nightmarish main character, it seems only natural that a sequel could and should play up the frightening alien aspects of Spider-Man's answer to the Predator.