Three different networks, three different types of time travel shows. What say you?
Timeless (NBC)
From Eric Kripke ("Revolution," "Supernatural"), Shawn Ryan ("The Shield") and the producers of "The Blacklist" comes this thrilling action-adventure series in which a mysterious criminal steals a secret state-of-the-art time machine, intent on destroying America as we know it by changing the past. Our only hope is an unexpected team: a scientist, a soldier and a history professor, who must use the machine's prototype to travel back in time to critical events. While they must make every effort not to affect the past themselves, they must also stay one step ahead of this dangerous fugitive. But can this handpicked team uncover the mystery behind it all and end his destruction before it's too late?
Time After Time (ABC)
Based on the novel and movie “Time After Time,” executive producer/writer Kevin Williamson (“The Vampire Diaries,” “Scream” franchise, “Dawson’s Creek”) delivers a fantastical cat and mouse adventure through time when famed science fiction writer H.G. Wells is transported to modern day Manhattan in pursuit of Jack the Ripper. Once H.G. arrives in New York City, he finds a world he never thought possible and a young woman who captivates him.
Making History (FOX)
Three friends from two different centuries try to balance the thrill of time travel with the mundane concerns of their everyday lives.
Timeless (NBC)
From Eric Kripke ("Revolution," "Supernatural"), Shawn Ryan ("The Shield") and the producers of "The Blacklist" comes this thrilling action-adventure series in which a mysterious criminal steals a secret state-of-the-art time machine, intent on destroying America as we know it by changing the past. Our only hope is an unexpected team: a scientist, a soldier and a history professor, who must use the machine's prototype to travel back in time to critical events. While they must make every effort not to affect the past themselves, they must also stay one step ahead of this dangerous fugitive. But can this handpicked team uncover the mystery behind it all and end his destruction before it's too late?
Time After Time (ABC)
Based on the novel and movie “Time After Time,” executive producer/writer Kevin Williamson (“The Vampire Diaries,” “Scream” franchise, “Dawson’s Creek”) delivers a fantastical cat and mouse adventure through time when famed science fiction writer H.G. Wells is transported to modern day Manhattan in pursuit of Jack the Ripper. Once H.G. arrives in New York City, he finds a world he never thought possible and a young woman who captivates him.
Making History (FOX)
Three friends from two different centuries try to balance the thrill of time travel with the mundane concerns of their everyday lives.
To the OP, I think it is interesting and a little surprising that "Time Travel" is such a focus of the Networks, and that all three are fielding such shows. I am also very excited and encouraged, as TT is a genre I am particularly fond of. I would, however, LOVE to see the Testing or Screening Data the consultants/network people gathered that told them airing shows on traveling in time would be advisable! 
