To go off on a tangent, my vision of future hard-SF combat is somewhat similar to that of present-day submarine combat--a perpetual game of cat-and-mouse, trying to keep tabs on where the adversary's vessels are, and when the order is given, the resulting flurry of destruction is brief but intense. (And when I say 'brief' I mean it's going to be played out by computer; I don't expect human reaction times to allow any meaningful meatbag interaction.) I expect the primary weapon systems to be solid-state lasers. These won't be as destructive as kinetic kill vehicles, but would be destructive enough against targets that require sensitive sensors and possibly solar arrays to function, and are near-instantaneous besides.