Originally Posted by
davetravels
Int'l J seats RARELY go out empty

.
The OP's newfangled version of GUC would seriously PEEVE OFF nonrevs.
No, it wouldn't. Any seat a nonrev might get would first go to a paying pax using an ordinary GUC. So by reducing the total number of GUCs, OP's version would help non-revs. (And by displacing paying pax, it would help nonrevs even more.)