I hope that the BXCM feel comes through in two ways:
1. The game has a tone that encourages creativity. A lot of the feedback we received on the DMG touched on this, that the game seems to unfetter DMs and say, "You are in control of this game, not the rules." It's something that's hard to put your finger on, but the tone, attitude, and approach of the DMG really supports this.
2. Most groups quickly reach a point with the game where they rarely, if ever, consult the rulebook to play. I really, really hope that the structure of defenses, the baseline DCs and damage we've established, and the logical connections between stuff makes it really easy for groups to run the game without books. If you write down the full text of your spells/prayers/exploits, you have almost everything you need right on your character sheet.