I like the premise
1. If you are going to get your knickers in a twist about time travel conundrums and paradoxes, don't watch this type of show, you will never be happy and will always have something to nit pick.
2. What a great idea on how to do a Sci-Fi time travel based series whilst trying to keep the budget to a bare minimum. No fancy sets or costumes or tech required to produced or be seen, or at least not very often.
3. If the future of the planet and/or human race is in the balance, does anyone really give a crap how much you futz with the time line? You know, big picture people.