Non-revs are irrelevant (to this discussion point, I mean, I love my NR friends that I have made through FT
) because (in theory, if there is no Shena, which I realize there is in practice) they are seated only after eligible elite upgrades have been processed. So they do not by themselves cause less revenue for the airline because they are not taking a seat away from a paying passenger (whether WFBF outright or upgraded from a Y ticket)