The unopened rack packs would come from 1979 Topps and also cello packs from 1978 and 1975. I firmly believe this would take off and would very much satisfy mystique and questioning concerning fixed or doctored cards that have been professionally graded. But, this would have to be noted on the flip. Uncirculated would be OK, but it would be neat if "rack pack" "wax pack" or "cello" could be incorporated with the word uncirculated. Otherwise the grading would not be altered. I truly believe we should head in this direction with grading if SGC woulod take the lead. I believe this would have a positive effect on the hobby as a whole and would give SGC the edge.
I would bet money they would do it. Worst case, you may have a pay a fee for the custom note i.e. Uncirculated - Wax Pack.