Update: Version D 0.12 (Demo quickfix #5)
Well, I said I'd push out a small update, but this one isn't quite so small. Having reconfigured the flight deck of the Triumph, I've also completely overhauled the Gatekeeper, upgrading it from a poorly-armed reconnaissance vehicle to a full-fledged heavy fighter, armed with two - yes, two - Hellhound Scatterguns for close-range demolition of unshielded fighters. You should also now be able to find it in markets, although it's a little rarer than other craft - and a fair bit more expensive!
To replace the pseudo-role in which the Gatekeeper previously sat, we welcome a new short-range fighter type, in the form of the Buckler Interceptor Drone. These drones only come in small groups and don't boast a lot of firepower, but they're cheap, nimble and lightning-fast to replace in combat (as fighters go). The Explorer now carries a full complement of these nippy little drones.
Check the OP for more details.
Please remember that I want to hear suggestions for balancing TSA ships' and weapons' stats against stock equipment! All recommendations welcome!