I mean... it is gamefreak we're talking about here. I agree it's crazy, but perhaps we just need to change the way tiering works? (or at least more tiers? idk) It's not like gamefreak is going to stop.
Well, from an RU perspective: Gapdos, Hippo, Kleavor, Cobalion, Thundy-T, Gengar, Zarude...