Every single person that has refuted your point about healing and w/e you say have probably cleared all GOs so far, did all missions asap in 1 run or plain aab them, to me you are the one in the wrong position m8, rethink your strats and teams cause if you are having problem with GO at this point of the game, you are certainly in the wrong path of progression.
https://www.youtube.com/watch?v=h1KD...ature=youtu.be here you have Ygg with just Rs, credits to mlw61520 for doing the video and move on cause this video alone proves you wrong.