What made me think this was SF?

Nathan Bransford's Surprisingly Essential First Page contest last week had me looking at Sabra's first page, debating whether to enter. I decided against it for a single, simple reason: The book's supposed to be SF, but there's nothing in the opening that indicates that. The first page should reflect the book so the reader knows what they're getting; I realized my opening needs work.

Then I was thinking more about it this weekend and came to the depressing conclusion that, as currently written, Sabra isn't SF. It may have an SF setting (future time frame, human colony long-standing enough to have cities, genetically identical replacement organs available with enough credits to pay for them), but it's really not necessary for the story. When it comes down to it, it's a story about an athlete recruited to act as a bodyguard for a pharmacy company exec who's in the middle of a battle for rights for his company's most lucrative product. Nothing SFnal at all. As has been said about other things, there's no there there.

Now I'm debating what to do. Should I keep working on the editing pass I'm doing to make certain that I've fixed the bare bones and character arcs? Should I start over at the beginning and remove all the SF trappings? Should I figure out how to really make it SF and *then* do the edit over from the beginning? If I figure it out, I'll let you know. Or when, I suppose. I did make editing Sabra my number one priority this year.*

*Yes, I know I did not post my 2008 goals here yet. Or a 2007 wrap-up.