At the moment, when I use Fairy Fire, the collectibles are highlighted by a tiny arrow. It's really hard to see sometimes. Thus, I suggest to replace it with something else bigger, and easier to see. And if possible, something pretty as well.
How about highlight the collectibles by a real Fairy Fire on them? Make the Fairy Fire effect big and tall, and very eye-catching like the buffs on buildings, so that I can spot the collectibles more easily.
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