In a comment letter on EGRPRA the American Bankers Association suggested that the requirement to report SARs to the board be discontinued entirely. A couple of key phrases from the letter are to the effect that the requirement, "...is inconsistent with rational risk management responsibilities... and "...it adds further risk to information security issues without concomitant benefit to the bank."
I agree with the ABA; reporting every SAR to the board is a dumb idea to begin with. It's required by the federal functional regulatory agencies, not FinCEN.
I cannot make any argument that the board needs specific SAR information unless the filing relates to a fact situation that rises to the level of the board's fiduciary responsibility; e.g. embezzlement, a major loan loss due to fraud, etc. There, the board should be told not because a SAR was filed, but because they should simply be told.
In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.