How would you feel if the guy next to you at the bar was talking about how they stopped a Free Mason plot to steal the cropse of Linclon to create a potion of eternal youth???
I would require all play testers to engage in 5 minutes of mixed martial arts combat before each play session. If you can't do it while half knocked out, it's too complicated!
I'm big into accommodating players' race choices. You can play whatever race you want in my all Commoner class (based off of the 3E NPC class) campaign!