Whatever happens in the playoffs, the 2012 NFL season is already the most dramatic and entertaining in league history. Surprisingly, it was due to a rare combination of design and remarkable happenstance. The season started with replacement officials trying to decipher evolving rules and Commissioner Roger Goodell’s ill-advised airing of dirty laundry in Bountygate but was salvaged and sensationalized by a troika of amazing rookie quarterbacks, unbelievable comebacks by two veteran superstars and mega-performances by Megatron, Detroit Lions wide receiver Calvin Johnson, and others. Some of it was the result of a confluence of will and talent, such was the …