Think of it this way. You pop your head out for about five seconds and those seeking bullets come out and immediately knock out your shields. The Melee from the generous healer standing right next to you, would heal you right back up, good as new. The super would allow you to step out while still taking those bullets and regenerate your shields fast enough to keep going. The added bonus though is that you can still shoot. The drawbacks for balancing are however is that you must stay in the radius of the warlock and it offers less full on protection like from rockets and things like a Giant Arlin priest smash, HOWEVER the ability would am modestly just dissipate away if hit like a ward of dawn. Think I'm it. :)