I dunno. If it's about usefulness in boss-fights the Shield is arguably more useful than any other super. (Golden gun and Void bomb don't do the greatest amount of damage to bosses) As for the 3 Titans thing. There [i]should[/i] be shortcomings when everyone plays the same class. The game should reward diversity or there would be no point. I would advise against getting close to a boss. Though, with my Helm of Saint-14 my group was able to melee down the Gatekeeper before Atheon when I shielded directly under him. So I don't know if the debuff applies to bosses or what. Just that it worked then.