Since you're asking, I would like to see a "high tech" lazer(Ion stream fed[think lond range beam rapid prototyper]weapon, or material "printer"[how much lead exactly?], or missile/rocket launcher with a warhead that leaves an AOE shield effect(a shield generator, activated upon detonation of guided missile/ballistic round upon collision or coming within a range of a hostile [target, or maybe just hostile unit, period]) which lingers for a period of time.
Not a classic modern nuclear electro-magnetic pulse exactly, but a missile drone that activates a "swarm shield" upon destruction, which activates other drones within a slightly larger range than that of the shield. Note, it would also have to act as a point defense missile, in that, like a flare, it would "pull agro" from missiles in range as well as fighters( auto attack and point defense) and possibly frigates((auto attack as well as point defense...?) due to its priority assignment/ on-board ECM capabilities... Maybe another rocket version should exist? Either way it would be like a deployable shield wall... that said perhaps a legitimate "shield wall, weapon, and lastly, this goes for offense as well as defense, a Deployable (Mobile and stationary[variable power radii and cost]) self replicating mine... The self replicating cloaked mine being the ultimately offensive weapon of defense ever conceived... Just ask the Dominion...
:P
As for the faction to go into, I would request a new faction ID so it in fully compatible with all mods.
If you want base faction stats, Ill get back with you on a modded custom faction to add it too, but I high regen, balanced faction sounds ideal, perhaps something like the Meat faction? A custom faction would be crucial to make a SOLID mod, but hey, you're the one in charge, I'll save such calls for the mods I lead...
:D
Anywho...
L9r