Okay, this is the new upgrade of the Epimetheus A, the Epimetheus B!
GTF Epimetheus B Click the link for screenshots.
The Epimetheus B improves on the A series by adding two (small) missile banks and modifying the gun mounts to support heavier cannons, namely the Prometheus. Because the missile banks are so small however, the type of missiles it can carry is restricted to missiles smaller than 2.5 units of cargo space. That basically means only Tempest, Harpoon, and TAG-A/B missiles are supported. Also, the missile banks make the ship slightly harder to menuever and slightly hampers its acceleration. But considering that one of these equipped with 6 harpoons can usually take down 6 Epimetheus A interceptors, I think the improvements outweight the disadvantages.
Oh, and if someone actually wanted to use these (Epi A and B), I suggest creating a new AI entry for them. Giving them high evasion rates lets the AI take advantage of the ships speed to avoid missiles.
(By the way, I fixed the tbl file for Epimetheus A, since it was goofed before.)
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Epimetheus interceptors have small afterburner and energy reserves. They empty quickly, and recharge quickly. Its hard to keep up a constant speed of 210, since the afterburners don't last very long and they've usually run out before you realize you're at top speed.
And as far as I can tell from Epimetheus VS Epimetheus dogfights, the AI likes going fast. If you're trying to tail one and shoot it down, they'll usually speed ahead, and they can get out of range before you know it. These ships have trouble in closeup situations, especially against something like an Erinyes with Kaysers. Epimetheus' turn slowly, so other fighters can usually out-turn them and blow them away (2 shots from an Erinyes). If you're piloting one of these, its best to just stay out of range as often as possible.