In regards to the topic of whether or not a second character should be allowed, I'd make the argument that decision should be made on a case by case basis. Someone who's shown to be quite active with their current character and rarely (if ever) approaches the bi-weekly posting deadline would be more eligible for a second PC than someone who's put out four posts over the course of a month. While it might seem a bit unfair to the latter individual, they should have the self-awareness to know that they won't be able to meet the expected post quota more often than not.

Just my cent and a half, anyway.