Tech the GTVA would probably need:
freelancer-style plasma turrets
converting all beams to slashers (have greater chances of knocking out turrets/subystems and vaporizing unlucky fighters)
b5 style multi-fire turrets
b5 style interceptor turrets
b5 style weaponry PERIOD
swivel beams (see: b5 triad weaponry)
tractor beams (see: star trek, star wars)
stuff they would probably end up making:
antimatter primarys (see: b5 vree weaponry)
ships that have no blind spots (see: vree ship desing)
true juggernaughts and "pwn all" ships (see: vorlon planet killer, nomad sun destroyer, imperial star destroyer, SSJ Gargant)
Gunships (see: ISA whitestar, FTX-011a THor)
Beam bombers (between gunship and bomber) (see: SB VInychal, AB Satyr)
Subspace torpedos (see: Local SSM, Cruise missle, Supernova bomb)