Nobody cares about gambit to begin with, the triple infamy weeks do nothing to make people want to play such and unenjoyable game mode. Double exp gains for a week would be so much more useful and fun to the general player base.
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The exp could be useful to players who are playing catchup on the season pass, or want more chances to get Bright Engrams to receive Eververse items. But to players who have already gotten to lvl 100, and already obtained the Bright Engram items in past seasons, it doesn't seem like it would be much benefit.