Let's start a rumor that Carrie Mulligan is coming back for a one-off return as Sally Sparrow. That would at least be interesting (and a Moffat tie-in).

I will always mourn over the Moffat-run, David Tennant season that never was. Everytime I watch Blink, I can't help but think there was meant to be more story to come between Sally and DT's Doctor.