Shows a lack of understanding of the characters. Needs a rewrite.

congratulations, you managed to ignore 8 years of canon.

starting from the Sara thing, when it was clear that Jack had long gotten over Sara and has been in love with Sam for years with hundreds of proofs for this, to Shanahan thing.

<>Rejection? Jack rejecting Sam? Are you kidding me? Are you even on this planet?

Acceptance? Seriously? did you forget the background checks, suspicions, interrogations,  lack of trust, going behind Sam's back, doubting her, throwing temper tantrums after he'd fucked her and leaving the bed just cause she wouldn't tell him what her CLASSIFIED jobs was about, getting his FBI friend to conduct ILLEGAL background cheks,...?

I get the feeling that you hate Jack and that is why you not only portrayed him as a bastard, but also Stalker-boy as the better man. 

News flash: Shanahan was a control freak. He had serious issues. He never gave Sam acceptance, and he certainly didn't love her wholly nor was in love with her because he doesn't know how to love.

Reality check: Shanahan never gave Sam acceptance, only distrust, suspicions,...

You either have to get your facts straight, if you wrote this because you didn't see about 99 percent of the show, or seek professional help, cause you aren't able to understand simple concepts and what a person's actions mean, which means you lack complete understanding of relations and psychology. 

one of the worst fics I have ever read and I definitely won't come back for more of your fics, beside the fact that i'll recommend everyone I know to avoid you.

What an interesting take on this. I normally dislike "what-if"s but this one I enjoyed. Thanks!