Originally it didn't work, and ships using only seekers did not gain experience. For a
while in the late pre-Gold patches you DID get experience for destroying the enemy with seekers. Which was nice. But it broke and hasn't been fixed again since.
It would be nice to have this back but it might be a lot of hassle to track what ship fired what seekers. I'd rather see experienced awarded for combat experience in general rather than the accident of the final kill anyway. Maybe 1 percent experience for every 100 turns in combat or something like that. Of course, this too can be a settable ratio in the text config files.
