Hey noob, my raid team cleared all content last night without a marauder. I think you should just look into being like us and using classes with other raid utility. We used a sorc/sniper/PT/jugg and between the snipers DMG reduction bubble, the sorcs off healing, the PT's taunts and juggs taunts/reflective dmg we made that content look like a joke.
Keep your BT we used raid utility to the fullest!!!
but...but.... those that use 4 marauders get an advantage!!!111