At least based on the nearly impenetrable pilot, I'd disagree. Or I'd at least say, more than any show I've ever seen, caring about what the characters do in this case would be a great help.

To me, the first season of Damages remains the best example of making this device work. It was just so darn brilliantly plotted. The flashes were not only consistently used but tantalizing, while remaining mysterious. And it set up some shocking moments, actually all fitting together in the end.