I really enjoyed it. I agree that the first half was better, but overall I still thought it was fun. Much better than I was expecting given how long it took for this to release (I didn't watch it when it came out on YouTube, I decided to wait for the Blu-ray).
Luke Pasqualino didn't really blow me away or anything, but he wasn't awful, either. He wasn't Bill Adama, but the Bill Adama we know doesn't really exist yet. This is when he's supposed to grow into that man. Keeping that in mind, I liked what they tried to do with the character here. I also liked Coker, and I'm glad he survived.
I highly doubt this will ever go to series, but I would like to see them do a few more movies like this one.