@MrMoody - Adverse inference jury instruction is certainly useful. But juries can be swayed by other instructions as well, which have the same effect.
For example, the judge may tell the jury not to “admit” certain evidence or to strike certain things from the record. When he does that, juries are supposed to pay no mind to the evidence.
But seriously, how likely is it that juries can really do that? I think that stuff stays in the back of your mind even though you tell yourself that it’s not affecting your deliberations.