Non-spoilery reaction: It's hard to really critique the premiere because we haven't really seen all of it, but I will definitely tune in next week. SGU has a different 'feel' than the previous shows, and the premiere really jumps feet-first into the action instead of having a typical character intro period. It's a big cast and that might take some getting used to, unless they kill off a bunch of them ;) According to my brother, it feels a little like 'Lost' in that way.
I'll have more to say after next week.
ETA: In LOLNews, Robert Carlyle (Nicholas Rush) is on Red Eye tonight! If you don't know what Red Eye is, it's the BEST SHOW ON AT 3AM ET EVA.