So my usual strategy, as a Warrior, for the AC path 1/3 lizard bosses is to use shield block to block the heavy damage scream projectile. The other day, I was doing this as a teammate was standing behind me and I noticed that he still went down even though I was in front of him blocking.
My suggestion is to have either a rectangular or conical region behind a warrior where other team members can stand when shield block is up to prevent damage. To keep things balanced, I would have it work the same way the guardian bubble does (prevents only projectile damage).
Warriors can also be specced to be fairly tanky, and this change would definitely reinforce that. Not to mention, it would take advantage of that sweet blocking animation. :P
