The Carolina Panthers are pretty much done making any changes. From here on out, it's about determining who in the building is going to stay in the building until August. There are not going to be any new names thrown into the mix in all likelihood. While we don't have any questions remaining about the state of the roster, there are still plenty of questions we do have. Some of them won't be answered for a long time, but it's still a good time to analyze what we do know and what we can expect. What will the offense look like under Brad Idzik? The Panthers are changing playcallers, but don't expect big changes. Brad Idzik has been with Dave Canales for eight years, so he's very much a student at the Canales school of offense . That means it won't change very much, if at all. The hope with this move isn't to transform the playbook or change the play-by-play operation. The hope is to give Idzik the reigns so he can focus fully on calling the offense while Canales focuses fully on the entire game.…