Just finished it.
I'm also getting some major lag in the first mission.
The voice acting, while not quite on par with a professionally developed game, was decent, and I enjoyed the story that was there. The missions were quite tense, even the one I'm mentioning in the spoiler that had no combat.
The moral choice with the Nero was a nice touch, but ultimately meaningless. It didn't really help that I could replay the mission. I destroyed the colony ship only to find that it contained quite a few civilians. At that point, I simply restarted and chose not to set off the bomb. I really felt immersed in the world the first time through, though.
Unfortunately, other than during that sequence, the ships destroyed the immersion entirely. Several Colossus sized ships were flying around, there were flak cannons (which during FS2 were stated not to have been developed until after the Great War), a beam cannon, and fighters from every era. I was half expecting the elite fighter squadron in the last mission to have shields or something.
Finally, I have to ask: Sonar? In space? Really? I mean, yeah, that mission probably took place in an atmosphere, but seriously.
The missions, while clever, were plagued with glitches. Particularly the attack on the Constantine. Maybe its the fact that I don't have a recent enough build of the game, but I encountered several bugs in that mission including:
Not boosting after capturing transport Kappa. I had to restart the mission. This happened twice.
Being destroyed by the second boost in that mission
My IFF beacons not doing anything to the Constantine (I "only" hit their flak turret)
Again, I have a feeling these issues may be on my end, but I would like some confirmation on that.
I look forward to more work from you as you improve your craft. This is a good campaign, although short, and I had fun!