What I am talking about is generally those who cannot or will not adapt. Everyone, us included, needs to be able to adapt to some degree. We need to bend a little here and there where appropriate.
As for people getting turned away, I think I've only avoided a few people in the few years I've been here. In these cases, the players were either terribly immature ( as in not yet capable of communicating like adults - possibly due to young age ), godmodders and griefers.
When a person is unable or unwilling to play cooperatively, there really isn't much else you can do. I'm not going to RP with someone who has the mentality and maturity of a seven year old, I'm sorry. Someone else can do that. That's not enjoyable for me.
As for dice, I would certainly experiment with someone who was good at it, someone like yourself. It's quite possible that my experiences with dicing have been poor ones. Based on past experience, I don't really like dicing.