This is cool I suppose. I personally will probably never play a character in the core campaign, if I wanted to restrict my self so much I'd just play other games.... That said it is a great way for people who are trying to get into GMing, as players will be restricted to a small amount of options thus making GMing much easier. Don't get me wrong you can do some ok things with the core book and stuff but I love me odd race characters. I would gladly run Core Campaign for folks if they were interested, I am all for the idea behind this. It is just not for me player wise.