I don't like the idea of a ship larger than the Basestar. It screams of cheesy Trekish writing. Let's go and make a new cool-wowzie ship each week!!! On the other hand, the Pegasus storyline sounds interesting. I just hope the destroy it before too long.
One other concern is the incessant need to pair up Starbuck and Apollo. This could easily degrade into TOS bullshit where they loose the realism and revert back to the 70's formula of having those two back-to-back. It might even destory the characters and their unique intereaction with TNS.