First of all, I think fighter torpedoes (Starkiller) are fine.
I am also fine with them being buffed in damage output or, as Ybers suggested, making them un-explodable by CDs.
Both ways it makes the Torpedoes more "noob" or beginners friendly and gives them a more reasonable place in pvp.
At the moment, though, I think the biggest problem with Torpedoes, for players, is that hardly anyone ever trained with them or used them in pvp to a degree at which they become handy for the user.
It makes them appear useless even though they really arent: They ...
- still fly at 280m/s or so, when fired at top speed
- do 11k damage (Starkiller) while still having 70 ammo (CB with 13k dmg has 25)
My conclusion: Starkillers can make the difference in a fight just like missiles do.