Notes from experiments on RPG optimization (Standard Non-therapeutic/education settings)

Here is a summary of many observations I have made through various experiments in trying to optimize the RPG experience. These are based both on observations (most of which include thousands of hours of recorded RPG sessions), verbal feedback, and formal assessment forms from participants. Scores of variables were taken into consideration and repeatedly tweaked to try to find some level of causal changes, but at this stage are probably only at best correlative, in the enjoyment levels of participants. There are plenty of potential confounds here, and so every statement should have that taken into consideration that these should be further researched with more rigorous techniques. However, implementation of these observations does seem to have lead to consistently higher assessment & observation scores. I hope others find this useful for trying to optimize your own RPG setting. This was a non-therapeutic and non-educational setting, it was only for standard leisure activity of tabletop role-playing games.