Roleplaying rewards can be earned in game or via posts on the wiki. World building, character backstory/roleplaying elements, fleshing out existing entries with more detail, etc.
Some possible rewards include:
Roleplaying Reward Re-Roll Point (RRRRP) | Turn in this token to re-roll any die. (NO LIMIT)
19 -> 20 | Turn in this token and change any d20 die roll from a 19 to a 20. (LIMIT 3)
Super Skilled | Turn in this token to add a +2 bonus to all rolls for the duration of a skill challenge. Each player may play only one of these tokens during each skill challenge. (LIMIT 3)
More ideas? Post ‘em.