Dude, do you have any IDEA how it would work? It needs to follow the laws of conservation of mass and energy, and the energy required to send any object faster then 20 milliseconds would be astronomical. NOT TO MENTION THAT PLASMA EXISTS ONLY WHEN ATOMS HAVE HAD THEIR ELECTRONS STRIPPED, WHICH IS ONLY AT HIGH TEMPERATURES!
The energy required to not only accelerate but also to contain AND shield would be nearly impossible to contain in a small enough container to fit on the power suit. It simply DOES NOT FOLLOW THE LAWS OF PHYSICS! IT WOULD HAVE TO RUN AT 100% EFFICIENCY! In Halo, the plasma weapons DO overheat and DO lose accuracy over SHORT DISTANCES.(150 - 500 meters is short for any energy weapon, 500 + is long.)Not to mention that since they Do overheat means that they operate well below 100% efficiency. DON'T MESS WITH A NERD SPECIALIZING IN PHYSICS, THERMODYNAMICS, AND ATOMIC THEORY!