What the season did a terrible job of is setting up the spin-off show, The Good Fight. If you have at least seen the pilot of that show (which I did before ever watching The Good Wife), the only thing about the new show that gets established is the character of Lucca Quinn (played by Cush Jumbo) who was brought in to replace Kalinda as a best friend for Alicia. But nothing in the final season's storylines set up the story that began the new show. I am not sure whether The Good Fight was decided on after The Good Wife wrapped, but if the showrunners knew ahead of time that the spin-off was a go, they did a crappy job setting it up.
The show did not wrap everything up in a nice bow, either. You only get a vague idea of what might have been next for the various characters, but there was very little of, even for the main characters, "this is what was next" for them. So, the show leaves a lot to the imagination of the viewer. They did manage to bring Josh Charles back for the final episode in a unique way. The only series regulars that did not at least make an appearance were Archie Panjabi (who had gone on to her role in Blindspot and, given the reported bad blood between her and Margulies, likely had no interest in returning for the finale) and Matthew Goode. Another bright spot was the addition of Jeffrey Dean Morgan as the new investigator to replace that part of the Kalinda character and as a new love interest for Alicia, as the real replacement for Will. He seemed to have good chemistry with Juliana Margulies and played the role of the mysterious new character very well.
The DVD set is a six-disc set. For those who get the DVD set, it is much like the other seasons (sans the commentary tracks that appeared in the first couple of seasons). Most episodes have deleted and/or extended scenes, ranging from about 45 seconds for some to around 11 minutes for the longest group. The final disc has the rest of the bonus material, about 45 minutes of making-of and behind-the-scenes material, a short wrap-party red carpet event, and a series-spanning gag reel.
Overall, I would say the season was enjoyable but I would not have ended the show the way they did, at least not without adding about 10 more minutes to give the show, and the characters, more closure. Although, will say that I can see what they were going for with the way it did end. I cannot say that everyone will like how it ended, but as a whole, I think if you liked the prior seasons you will like most of this one.