It does seem that a fairly simple and large correction to the way the fan surveys, and thus the attendance receipts, from home games go should be based on a rolling average of prior games played instead of merely the last one. Or, add a variable for the rolling average, such as prior two months of league play (resetting at the start of each season). I'm no expert, as I've only been playing since S18, but I've heard a lot of complaints about this and I think they make sense.