Thing is, I don't really watch Warehouse 13 either, my roommate does, so I'm not all that familiar with how things work, just the gist and the one character.

Don't think this one needs a sequel. I think the best part about Ryan and Esposito is they work so well that once you get them to the tipping point, the story is pretty much finished. It's like getting up a hill. Once you get to the top, it's just gravity the rest of the way down. :)