After 15 years and some variation of this asked for, it may well be a very good understanding of human nature.
If you can ascertain enough info about the current arena with out having to login to it, there is a good chance your biases about player numbers, terrains or even individual players will help you to not play as often. If you have to get into the arena to determine the things you are biased against, most will stick around for a bit since they have gone to the trouble to get there. Helps to maintain a cycling of numbers over the day. The outliers are the lone player individual with very strong biases about game play like Lazor or old vets who have been around a very long time. The 80% who don't know any better do not need help to not long in by following the examples of their finicky elders.