I liked it ... If you watch the pilot and first season of L&O SVU, which is also a spin off show, it was very poor. But the producers identified what (and who) worked and what didn't and by the second season fixed it and most people would now say that the show is better than the original. It's always the case with spin off shows, they are very difficult to get off the ground because people can't let go of the original and are reluctant to accept and get comfortable with new characters in the world, created by the "mother ship". Even in the original show new characters are hard to integrate when they are the replacement of a former character when Rachel Nichols came in to fill A.J Cook's position she wasn't greeted with open arms by the shows fan base even though she is a great actress and plays her role very well. But after one episode of CM:SB I would say there is room for improvement but on the whole, if you can forget about Hotch, Reid and the rest of th BAU and try to view it as just another drama series then you'll enjoy it a lot more.