[Mr Chaos]

I get the feeling this will be a reversal from what we mostly see in Power Rangers and the human-form of the villain, in this case Heckyl, is actually the more dangerous of the evil forms. Snide will be a powerful beast by Heckyl is cunning and deadly.

As others have said, I think he will become the Talon Ranger and that his Energem will be different from the other Rangers... maybe an artificial one? Maybe he decides to take the energems and drain some of their power to create the Talon Ranger Gem, which is why the suit has elements from other rangers (like the colors being blue and red, Spino being similar to Rexy, a sword-like weapon like Ivans, the armor being an alteration of Dino Steel, so on).

I also think it will be revealed that Sledge is alive and nursing his wounds and at the end he will return to aid the rangers and make a truce, deciding that Heckyl and the other prisoners are enough and he, along with Poisandra, will head off to greener pastures.