For those of us who qualified via the 90K prior threshold, another 10K isn't a big deal, I suppose. With a new 100K tier, I suspect AS would have to increase the GGUs value proposition to something similar to AA's SWUs? Finally, I think this change, if it were to occur, is rather unfair for those who have flown and earned their miles exlusively on AS metal.
PS - This *may* change my prior indifference between AS and WN on the ultra short (SFO - LAS/LAX) routes in AS' favor.