Just watched episode 1 and I have to say you're off to a good start.
I like the ship, the sets, and you've already said that character design will improve.
I have a couple of questions though...
Is the XO simply decorative, or will she actually have something to do soon? (Okay that's a little harsh, but damn, she just sat there.)
What happened to the Hirok? (not sure if I spelled that right & great looking ship btw.)
One minute it was adrift near the Klingon BoP, the next it was gone and forgotten. I re-watched that part twice just to make sure that a stray shot from the Romulans didn't nail her, but she seems to have just drifted off, and is left when Mariner slipstreams out.

Oh wait! I found her! She drifted right out of the imbedded video screen and was wandering around my browser window. No wonder Mariner lost track of her.
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ImageShack.usIn my opinion, the XO should have beamed over to the Hirok right away with security and medical to secure the ship and render aid. Once the shooting starts, Mariner moves to protect both ships. When the BoP looks like it's going to blow, Mariner is suddenly in a mad rush to tow Hirok out of danger. Finally, Hirok, with XO in command, follows Mariner back to Starbase.
Great find BatBoy!!