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It absolutely can. You can build up cooler uses of FATE's central mechanics, allowing for -- for once -- a truly interesting or difficult FATE, and then trickle those interesting mechanics down across all prior FATEs. You don't 'Latest Ascian Boi X' to feature prominently in those FATEs for them to make use of the tech.
Similarly, you can develop, say, more interesting gearing or upgrade/augmentation systems as a central feature for a new raid tier, but still make use of parts of those concepts (lore in no way conflicted) across the game as a whole.
In both cases, the change seems separate from any specific event, and that's fine.