In franchise mode, create a new coach and assign him to one of the teams that are available, but not your team. The game only lets you choose from the worst teams. Then go to "Roster", then "Trade". You can now trade away the better players on that team to your team without having to send a ridiculous amount of good players for just one (even bad teams have some good players). Also, because the teams you can choose are the worst teams, they have the best draft picks. This allows you to trade away the draft picks. In other words, if you do this with several of the bad teams, you can actually end up with, for example, four first round draft picks. Its a good way to keep your team on top, and not have to suffer because your team wins so much.