They recorded a video of the three GMs that have run games in Exandria last night that was available on Twitch. If you see it, Matt talks a bit about player evolution. When a player is new and does not 'know the ropes', they tend to push more boundaries and do crazier things as they don't really understand their character sheet or the rules of the game. As they get to know the rules, they tend to pull back to the 'expectations of the game' and select more options from within the menu provided by their spell list, their character abilities, etc... Then, after a while they tend to push boundaries again by thinking about more than their character sheet again - looking at the features of the rooms they're in, etc...
Games, and specifically players, evolve. I've seen this a lot of times and I encourage players to move forward to get back to that third zone where they both know and understand the rules, but they think about the story.
In CR, when they recorded prestream games, most of the players didn't know the rules. Heck, most of them were still struggling with them throughout campaign one. Some were more experienced, but you can see the evolution of Sam, Ashley, Laura, Marisha, and Travis. Most of them have moved on to that third phase now which gets them thinking about the story and using the rules instead of thinking about the rules so much.