Since I've only seen about 4 episodes, I've probably missed something, but can you tell me why they continue to use only Parker as a Chrononaunt? If I were in charge I would train up a team, as they do Astronaunts, and pick the most promising. They don't even have someone to stand in if he gets injured.
I ask because in the episode I just watched he regressed to the age of 10 (something went wrong during the Backstep) and he put the mission in danger. I wouldn't want the same thing to happen again.
But, I also think they talked about him being genetically pre-dispositioned to Time Travel in an earlier episode. Is it only possible with a certain few individuals, and they haven't been able to discover another person like him?