I'd like to make some recommendations for next year's Free RPG Day 2015.
Free RPG Day is an event that RPG Companies like Paizo give free product to showcase their games in the spirit of growing the hobby. It's meant to attract new players who may have never played in an RPG before or those who may not have tried a particular system and hopefully gets them to keep playing.
It's also a big event for those of us who already are involved in RPG's and many fans of Paizo are looking to play the latest offering from our favorite publisher.
My recommendations to support both groups are as follows:
1. The level of the adventure(s) should be between levels 3-5. At these levels many of the PC classes get signature abilities that otherwise would be unavailable as a 1st level beginner adventurer. It allows classes to strut their stuff for new players without overwhelming them.
2. The adventure - should be a series of 3 or 4 1-hour quests similar to the PFS Quests in Goblin Attack, the Beginners Box Bash, and the quests used for the PFS Open Call. This is mainly to allow for walk-in's and passerby's who may not have a full 3-4 hours to play an RPG at that time, but may otherwise be interested.
3. They should be rewarded with a gaming 'hook' to get them to come back and play again. For Paizo it would be a minor chronicle sheet that is usable in Pathfinder Society Organized Play (as Paizo's main marketing engine). If a new player were to play all of the quests offered in the Free RPG Day module then they could get a more substantial boon similar to the boon offered during the Beginner Box Bash. If the player is a current PFS member then they would be offered a boon similar to normal chronicle sheet offering 1XP, 1 or 2PP, and level appropriate GP.
These are my recommendations if anyone else has others please feel free to chime in.