Like I said, its only needed if the group is bad. Because it's the most forgiving strategy. Just be aware, if someone [i]needs[/i] that strategy, they're the bad player. Also, a striker can be used to tank the shade's slam, just as a radiance can, more reliably than a bubble, and all while dealing damage. And have one of the best grenades for keeping the ogres where you want them, or one for high dps. So if you already have 2 defenders, and a third titan is running striker, wait and see.