[lvh]

Not really. The amount of significant digits in those measurements is too small for it to be affected by such a minute redefinition of the second (and by consequence, meter). Keep in mind that we're actually changing the definition of the second (and, again, by consequence, meter); but we're still putting the new definition somewhere in the area that the old definition put it. The only reason for the redefinition is that we can't measure the things it's defined in terms of any more precisely.

[pasbesoin]

This is really just off the cuff, and I haven't done the math and all that, but various forms of real (not simulated) imaging are entering increasingly small scales and timeframes.

Clock accuracy pertains directly to such imagining. I, um, "imagine" there is relevance to this work.