Really, applications of the kerrblade and plasma tech is extreme. New shotgun shells, for example, new kinds of ammo.
But not just these. Lasers, for example, could also be adapted as projectile propulsion, especially in combination with another, like plasma or EM propulsion. Plasma can be used for engines, too, if EM focusing like the one in PB weapons is used. Perhaps later in game, this could become a new type of propulsion, striking middle ground between speed of AM engines and fuel availability of jet engines.