In the "I could do wonders for that boy..." scene with Darlanne Fluegel, Sybil Danning has a white business-card tucked into her holster-garter.
During the final battle when Shad is firing on the array of missiles, one of the missiles explodes and it cuts to an earlier explosion with Nestors ship in the foreground. This is sometime after Nestors ship has already been destroyed.
When Sador orders snipers to shoot at the Akira people, several are struck by energy weapons. One woman clearly has a wire running up her leg for the squib charge on her chest that just went off.
When Dr. Hephaestus tells Shad "when you're in my station, you're in my presence", the hand of the actor can be seen through a small opening in the enclosure. Since it's implied that Dr. Hephaestus has replaced his entire body with cybernetics, he shouldn't have any hands.
(1:18:25) A body is visibly breathing, even though he is supposed to be dead.
During Saint Exmin's final battle against Sador a crewmember can be seen on the left-side of the screen (over Sybil Danning's right shoulder). The crewman is visible during the 2nd, 3rd, and 4th cut to her during the battle. The crew person appears to be sitting just behind the wall immediately behind Sybil.