Who was it that released an omicron that had broken game mechanics? The players or CG?
Who was it that 2 weeks after the release realized THEY had made a mistake? The players or CG?
Now if we can at least partially accept that CG did one/or both of the above...how was a player supposed to insulate themselves from those mistakes? The only possible way to prevent the above was to not apply the omni...which means that everyone that did apply the omni has been harmed by your mistakes.
This has absolutely nothing to do with "fundamental changes." You made a COMMITTMENT of expectations and now you're backing out. That's your fault and the players shouldn't be punished.