I may need more time to digest this one.
First, I hate Ensign Charly a little less after this episode. She's still a jerk and definitely NOT trying to be at all professional regardless of what she states based upon her facial and physical reactions to Isaac at any opportunity, but at least she is given more motivation beyond, "I had a friend die against the Kaylon so I'm justified in bullying Isaac for the rest of eternity."
Regarding the time travel, I have a mixed reaction and may need to watch it again.
On one hand, the crew needing to strip Gordon from his family and his very life was a powerful choice, especially since they have to live with the choice and Gordon doesn't. On the other hand, I really wanted to see the actual consequences of having to "rescue" Gordon after a decade on Earth. Is Gordon stripped of his family and returned resentfully against his will? Can the crew take Gordon and his kids, but abandon the wife with knowledge of the future? Does the crew ultimately relent, allowing Gordon to live out his days and what does that ultimately do to the timeline?
By being able to simply go back further on a second try, it almost became a traditional Star Trek "reset button" episode in which there are no consequences other than the Ed and Kelly feeling bad. They never even had to interact with Gordon nor threaten him in 2025 if they could collect more material and time travel further.
The Gordon comment about why can't my kid be a founder of the Union was very Scotty-esque about transparent aluminum. "Why? How do we know he didn't invent the thing?"
As Charlie and Isaac walked into the biker bar, I also got some Terminator 2 vibes. I half expected Isaac to ask for a bike and have a biker attempt to put a cigar out on his chest. While it was lower key, the arm wrestling scene was quite entertaining. "Oh no, I'm losing..." That's all I have for now...