My opinion is that the pickup radius, especially since it’s not automatic, when we click on shards/glyphs is that the radius needs to be increased a little bit. I don’t mean a screen-wide vaccum or auto loot but more often then not when I click on a crafting mat there is sometimes 1-2 leftover. Then I need to point my mouse and walk ever so slightly to click again on the last one or two, when visually it looks like they all belonged in one cluster.
Anyway, not sure how anyone can determine what is an acceptable radius just giving my feedback.