Here's an idea :

New "general" action : HALP!!!
-give the user a halp buff for 2s
-make a big marker appear above target head
-recast 60s ?

Rescue :
-enabled ("trigger" effect) when a party member is under halp buff
-pull party members within 30' to you if they have halp buff and remove it
-recast 30s-90s ? maybe with charges

Solve some problems and create others.
The healer won't pull you to your doom anymore, but if you want to be saved you better beg