WowAce

Hi - thanks for the amazing addon! I'm a healer in a hardcore raiding guild and a frequent battleground healer, and even though I just found this addon I already don't know how I ever lived without it!

Feature request:

I'd like the ability to also pop up an arrow (possibly of a different color) to the target of a spell that failed due to line-of-sight. There are many cases where knowing the direction to your heal target could help you re-establish line-of-sight (eg Yogg-Saron Brain room).

Perhaps this could be accomplished using the same heal macros you suggest, with a new addon option to enable hooking the line-of-sight error to toggle the arrow on with a selectable "line-of-sight" color.