I am cautiously optimistic.
There were things I didn't like. Starbuck, for instance, just didn't seem right. It isn't because she is a woman but rather because the performance seemed forced. Like the actress was trying too hard to be butch. I just wasn't convinced. I wasn't real crazy about the uniforms either. The officer's uniforms were ok, but I hate that stupid muscle shirt over t-shirt thing they kept doing. Like everyone else, it seems, I wanted to see more of the metallic cylons instead of just the "human" ones. I also hated how everyone seemed to be too flawed. The whole show was rather darker than I really like, but that's to be expected given what was going on at the time. It's hard to make the destruction of a civilization seem bright and cheerful.
I liked things too. I really liked Baltar.
As I said, I really liked Baltar. It seemed to me that they were being very subtle with his character. You got the impression that he didn't intend for anything bad to happen and was not a traitor in the least, but also that he certainly looked out for himself before thinking of others. You got several scenes where you wondered about his actions and what motivated him such as the scene on the bridge and afterward. They've really set up an interesting conflict with him. I can see people watching any series just to see what goes on with Baltar not unlike the following Lex Luthor has on Smallville.
The new Boxey doesn't bother me, but the old one didn't either. Then again, I don't generally get annoyed by kids so take that as you will. I will note that this kid is older than the original Boxey. The old one was about 7 or 8 in the old show and this one looks maybe 11 or so. That can make a big difference in the character. Interesting sidenote: When looking at the IMDB entry for the show, I discovered that the officer on the station at the very beginning was listed as "Boxey's Father". You hear Boxey later mention his father was in the colonial fleet and that he was told he was missing but he thought he was dead.
Another thing I noticed was a very short scene where Col. Tigh was lying on his bunk (not too long after the fight with Starbuck) and he started burning a picture of a woman who I presume was his wife. It was a picture of number 6.
I do have to wonder how they're going to do a series out of this. If they have gotten away from the cylons, where is the conflict going to come from? I hope it won't be "alien of the week" scenarios. I doubt they could pull off earth very well either. I hear the miniseries exceeded ratings expectations, so I guess we'll see.
ps: Remember when a "mini-series" was ten or twenty hours of television over several nights, not a long movie?