[MauranKilom]

You could add timing difference to individual lasers as necessary. It's not really more complicated than duplicating the laser setups and feeding them the same signal with time delays. Not a huge step.

However, non-coplanar mics would work for the opposite reason: If they are on different sides of the device, you couldn't reach all of them from the same distant location. So unless all mics receive (more or less) similar sound signals, you could discard it as manipulation.