Insta-death would have to be so limited it would no longer be useful in most situations, I suggested it come with its own combat art as a focus effect like along the lines of exacting but for our stealth attacks maybe, say so and so % chance to proc stealth attacks doing 30% more dmg or whatever isnt as "fun"
AoE immunity would also be so great in its own way.
edit: just remembered, best case scenario our epic is 2 daggers, in eq1 many were rewarded with 2 weapons that they could dual wield and warriors had the option of transforming from a 2h into 2 1h at will
