"Or what if the Mary Janes were found right there in the closet? Along with, say, every single other pair of shoes Laci owned?"
That's a great point! She wouldn't walk barefooted nor would she walk in flimsy shoes (slippers, flip-flops, etc.)
All shoes accounted for, as Jackie said, would be perfect.
Remember months ago, Matt Dalton (since fired by Geragos) claimed to have "found" some sort of slippers or flip-flops or other flimsy shoes, belonging to Laci, at a house down the street? That whole thing sounded like a total fix to me. Maybe all of Laci's shoes ARE present and accounted for, and maybe the defense knows this very well!