[Max Lobovsky]

I'd say that it definitley is not more than 4 teams per match as getting even 4 teams on the field and off the field in a timely manner was a challenge.

Second, I doubt the hint would be talking about the number of fields at nationals, because, frankly, who cares?

Same goes for the number of people on the field.

I don't think it would be in reference to the number of goals last year because its not like people are actually expecting there to be 4 goals next year for any reason.

And finally, I think the cost of a new field (unless they are going to use the old hexagon field) is prohibitive, so it isn't referring to the shape of the field.

In conclusion, we can say, with reasonable certainty, that we know nothing.