this is why TeamBuilder is so much better than the plain old CAS of last-gen. you can create historic teams, lower tier college teams, and High School teams very accurately.
also if you don't like, or you want to revamp your team's uniform, you can easily do that as you can keep your team's roster(you'll have to name the players yourself though) and stadium and basically redsign your team, then just replace your old team with the revamped one in dynasty mode and you get to keep all your team's rivals.