The Changes in the Districts.
There's a lot of things about the rule change that don't make sense.
Why did the league make the changes, but then didn't enforce it? If they did it to break up the Hawks and create more even teams or to help district five, then why didn't they make that happen at the start of the season? And wouldn't some of the people involved not like that they put some rich suburb kids with the inner city team? And were other kids involved besides Banks? If they weren't, then why change the rule for one kid who didn't want to leave the Hawks?
Then for the coaches. First, if Coach Riley knew about the rule change, why didn't he fight like crazy to prevent it? Certainly he would have had enough clout within the league to convince whoever was running the league to forget about it. Also his best player was the son of a high priced lawyer. And if he didn't know about it, then the people who passed it would have done so because they thought it was important and didn't want him interfering. But again, then it wouldn't have made sense for them not to enforce it. The rule was known. Hans knew about it, and told Gordon.
Also the previous coach of district 5 should have pointed it out and improved his team. They had a coach at the start of the season who had a heart attack. So obviously he cared about the team and would have known about a rule change that would have greatly benefited them.