I was a little disappointed by this show. The double agent wasn't a great storyline. I think if they had had some good starship porn (i.e. a space battle to relieve and rescue the stars) at the end of it, it would have been better.
I didn't mind the agent twist, but it could have used some additional back story to really drive it home IMO. I did enjoy the show, but I think you're right. The 1st Cylon War is all about big ships and big guns, so more of that would have been nice.
Overall, I liked B&C, but I'm not sure it'll generate anything new. Sadly, my new SyFy fix is likely to come from Defiance. *Fingers Crossed* Man, I hope that series doesn't suck.