Is it possible to achieve a blue message with todays system? - YES
Is your own personal skill's, reaction times and tactics part of what makes these fights so "slow"? - YES
Can this issue be solved? - YES
If we change everything, will it mean that fights get shorter? - Not necessarily
Since we do not need to "fix" anything to meet the conditions you seek, why did you ask for a "fix" in the first place? - Because you are lazy and want a instant-fight-all-win-all vehicle.
Wanna instakill people? buy a Dreadnought and spam tri-heavy trebuchets.