I think I understand how restrictions on psyches and non standard bidding systems evolved. It is a matter of the greatest happiness of the greatest number. For social bridge players, dealing with the unknown is typically not intellectually stimulating, but disruptive to their pleasant afternoon game. Thus, to protect the enjoyment of these players, the regulating authorities try to prevent unfamiliar conditions from affecting the game of social players. In the US, the ACBL even tried to introduce the idea of games where everyone plays exactly the same system -- though this will not work with social players as they will never know the system properly. For strong and ambitious players, these restrictions are a major drag. As far as psyches are concerned, putting opponents under pressure is part of the game. If we are going to prevent "disruptive bidding methods", perhaps we should ban preempts. (Actually, some attempts to regulate "undisciplined" preempts have been made.) Even more annoying is that a pair is prevented from trying to develop new and improved bidding methods, or from having fun with some interesting old systems from the past (e.g. Roman Club). I think that many highly creative people have been lost to the game because their creative energies have been deemed unwelcome. For me, the rise of Internet bridge, where it is easy to arrange games with like minded individuals, has been wonderful. Finally, for the first time in over 30 years, we can play bridge again.