Just got around to seeing it today.
Really, really liked it. To be honest, I think it's a good entry point for people unfamiliar with Star Wars: The sad truth is that there are people (and I'm assuming this will be a problem with kids especially as time marches forward) that might be intimidated by how dated A New Hope is. Being Rogue One is essentially Episode IV: Part 1, you could lead them right into the next one and it'd be a perfect transition.