The problem with the season is that we've seen so much of this drama before. Moles, Jack being framed, Jack clearing his name as agencies hunt him, "patriots" trying to attack the country, president being questioned/betrayed by her members of her cabinet, etc. But the biggest problem I've had is that the writers seem to alter characters to fit the story. Some of Jack's actions have been pretty dumb and blatantly meant to expand the plot to further depths of absurdity. Like allowing the senator to open his door late at night, which resulted in him being killed. Or taking that enormous chance by surrendering the president to Juma. Or finding out there's a mole in the WH and not looking into it at all. etc
The positive is that this season has been quite compelling and rather solid; each episode entertains. Even the early episodes with the FBI mole drama didn't annoy me too much.
Depending on the ending episodes, this could easily be the second or third best 24 season but we'll see.