I’m doing the World Quest to kill Warped mobs and collect scrolls on the ground. The scrolls are not that easy to see and the Highlight feature does not stand out well against the light coloured sand.
I amd similar issues with quests in Bastion against that light coloured ground, in Maldraxxas against the green ooze, in the Maw in the river of souls.
Wowhead had co-ordinates for 6 scrolls which was handy but the quest needs 8 (too many things to find, 6 would have been enough).
I don’t think it would take much development time to improve the Highlight feature. Thicker lines, perhaps alternating light and dark colours. Obviously this would be an optional setting for those not wishing to have all the objects highlighted.