Thank you for the legwork Paul.
For the sake of continuity, the discussion sarted at the IAEI BB here concerning arc-faults and there similarity to our present GFPE ( 30ma)
As my home state of Vermont has added to the national requirements of AFCI's to the point of 1/2 the panel or more installed with them, the economical and practical outlook
( which may in fact be a national one , should 210.12 grow inclusive of more than bedrooms)
would simply be to subscribe to standards seen oversea's.
In the grand scheme of 'branch circuit' protection 30 , or even 100ma would seem to meet the same criterior sought, as long as the current practice (pun intended)of the point of use GFI protection were to be kept.
The stat's would , of course, play a part in the justification...as Davey S. is questioning here
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