I'm currently giving the gold codex a try and am thinking about how to use the codex crafts.
- The Turtle is straight foreward. It's your main troop transport.
- The Shadowbat is a bit more tricky. The Turtle is a better troop transport. The Shadowbat is faster, but still slower than an aircar. If you really need speed, you can use a Hawk as a fast troop transport. I see a potential usefulness, but do you have the hangar to spare? In my base I will have a Turtle as the main troop transport, a Hawk or airspeeder as the fast interceptor and then I also need an aircar to shoot down civies. If a Hawk is present to fill the fast troop transport role, the extra hangar for the Shadowbat is just too much price for too little gain.
The Shadowbat can be armed with missiles, but what are the potential targets? Missiles do too much damage to shoot down civilian craft, and everything else is most likely too fast to catch. You might get lucky, but I don't expect the Shadowbat to do much aircombat. Putting thrusters or targeters in the missile slots might be their best use (once you get them).
The most useful feature I guess is the radar range (600) combined with the large fuel tank. You can use that to quickly fill gaps in your radar coverage. The Hawk can somewhat do that as well with radar range 500, but cannot fly too long (6 h).
Sooo... the Shadowbat will probably be the last of the codex ships to get. As a troop transport in your secondary base, once you have expanded enough to have one.
- The Hawk. At first you will only get one, as the flame cannon will be the only heavy weapon you have. With a flame cannon, a Hawk is very much like an airspeeder with a seagull launcher, just more sturdy. It is also a decent fast troop transport.
The main problem of the Hawk is the armament, if you want to get a second one. What are your early game options? The spike launcher will be the quickest you can get (bounty prize), but a single one doesn't have enough ammo to be useful. I guess the best option is to try and get the ramjet cannon. But that depends on luck on your interrogations (needs rogue fields). Any better ideas?
Early game, the Hawk would actually be much more useful if it had a light weapon slot. The light cannons have much more ammo and low enough damage to intercept civies. With luck you can also have a reticulan plasma charger or a sonic oscillator. I'm really missing the option to mount light weapons in heavy weapon slots (could that be a special of the Hawk?). Or a heavy weapon version of the light cannons. Like a 25mm gatling and 30mm gatling. Shouldn't the runts be able to clobber something together?