Another thing regarding the wow classic gold lightwell has been much exactly the same as using a bandage without the debuff. I am not sure, although I believe that the best bandages cured more than the well. Hoewever the gamers were with using bandages a lot more flexible. 

If they actually were in a situation where the lightwell would help, they did not need to move to it and there wasn't the risk that another player would consume it's final pile. Another gift that might fit here will be enhanced fade in the shadow priest tree. 

But that's more because of the bad design of fade itself, making points in enhanced fade pointless. Since you had to have more than 30% aggro (in case you weren't in melee range) over the tank and I think fade reduced the aggro by only 10%, it didn't help in loosing the aggro. And it didn't get rid of the aggro eternally.

The blood trend one is useful if you understand how to classic wow gold sellers utilize it. Utilizing blood trend and other fury abilities make it so that when you sit down and get crit on (guaranteed to become crit when sitting) you get a few fans affecting weapon speed, harm, and Health regen.