Even with the succes of the second movie, a tv-show is doubtfull. Keep in mind, tv-shows are not doing all that well these days. Most shows get cancelled pretty quickly. Mostly because people don't like to invest a lot of time in getting to know characters, follow long story-line and keeping focused. That's why movies work. It take 2/2,5 hours, and you're done. That's what people like these days, things that require less effort. Sad, but true.