While an option for such a thing would be good, the current gameplay should be still allowed - it adds an additional level of strategy, because such firepower can be achieved only through being very organised.
Ok, the people blaming the dice are being very silly indeed.
Consider the way the game works.
RNG is called for 1st attacker die RNG is called for 2nd attacker die RNG is called for 3rd attacker die RNG is called for 1st defender die RNG is called for 2nd defender die