Guild Wars 2

Pretty simple suggestion, I think it would be a nice little addition if Arena Net would implement a zone indicator for the heart quests which would highlight on the mini-map the borders of the zones in which a heart quest can be completed.

So in essence:
Mouse over the yellow heart on the mini-map, and a zone lights up on the map showing you where you should look to complete the quest.

Agreed! – but until that happens (if it does) we just have to look at our heart on the side and if it’s not there, you are out of the zone.

+1
Some zones are actually small, but some are much bigger then people suspect. So showing them on map would be a big help

This would be very helpful.