You always hear how essential Firebrands are to a zerg and playing on a Tier 1 EU server we often face stronger enemies with better organization and/or better class composition in their zergs.
It made me quite interested in the question, what if an organized zerg attempted to take a defended T3 keep, preferably an EB keep or the enemy's home garrision (not on RBL), without Firebrands? Would it be possible against an unorganized group of equal or near equal strength or are zergs really that depended on one class?
I would love to see someone do this, to be honest. One zerg, at least 30 people, no Firebrands, take a defended T3 keep.