We all liked it, from the GL geeks that Sam and I are to the relative novices that Bonnie and Gretchen are. It holds together well, there are a lot of nice bits of character work, and the special effects are just fine (although Gretchen feels they're a bit reminiscent of Harry Potter. I attribute that to it being the current state of the art in Hollywood.)
I'm hoping the numbers hold up well enough for there to be another film. We'll see.