Change the RNG of the Trace Potions and Trace Charm
When these were implemented I thought they were meant to help during event when we need to gather a number of certain foundables. Back then the trace potions did help somewhat but these days more times than not when I use the potion and charm I usually get everything BUT the foundables I need. Like right now for the current event I'm at the bonus quests and I still have only 9 of the 30 of the Mysterious Artifact Foundable and that was after using 4 trace potions and a bunch of trace charms.
Now I'm not saying to change how these potions work so that we only get the foundables needed for events 100%. But at least make the RNG so that the event foundables appear more likely than not.
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