My guess is that Universal has figured out a comfortable - and econmical way - for them, based on the last two season releases: 2 episodes per disc, inside individual slim-line jewel cases. While they did it with 3 cases for the Seasons 4 & 5, they now just have to add 1 more disc / case to cover the 8 combined episodes of a Season 6/7 release. At least, one has to hope for such....

Dude, you can copy that stuff without having to worry.

Since you own the original DVD's, you have the right to make backup-copies for your own use.