Oh, and as far as the worry that Core is somehow PFS lite and that somehow it distracts from the versatility of the ACG and other resources, really? As I understand it, you play normal mode, you have versatility. Great. You play core mode, you play scenario x-y, you still can have another character play the same scenario x-y, and get credit from it. So, play core and, if you want versatility, play normal. You want both? Well, hell, play both.
I look forward to the versatility. I like Ranger. I like Rogue. Hey, there's a cool Class I can play in the normal mode. Or, I can multi-class in core like I use to do back several decades ago. Why the hell not? One for normal. One for core. And I can get credit for both.
Might be fun to replay scenarios one has played in normal mode in core mode, for the challenge, especially if they play them as average or above average build verses optimized.
In video games I try to over-level sometimes, but I am the only one playing. In society, I want to play with a somewhat equal balanced party. Most new people, I suspect, would.
Might be nice if the GM was given a chance to have an optimized opponent automatically roll an initiative one point above that of the optimized player and that npc has an attack and destroy geas against that particular player, class, look, whatever. One per overly optimized PC. Just sayin.