I disagree with everyone who was saying this would have made a great series finale. The series isn't about Jesse and Walt's relationship with Gus. Gus didn't even come into the picture until the second season. As other people are mentioning, there are still a number of plot lines that still can come to head. Mainly, as mentioned, Walt vs. Hank/DEA and the Walt & Jesse's twisted relationship.
agreed. people who have defaulted to 'they have no reason to cook anymore, it should have ended' are not thinking of the possibilities this could go in. they DON'T have a reason to cook, so will they? most likely not. if it's anything like the writers said about this year - the didn't even know where it was going until it was time to sit and write it out together.
and why has no one mentioned the repercussions of being the guys who took out gustavo? remember in mexico when the hospital worker ignored mike and when he was asked by jesse why he said 'this man pays my son.' gus may be gone - but the number of people who were loyal to him and were under him that will be directly affected by his death aren't. hopefully this will be addressed, though not in a weekly "gotta get away from so and so" thing, but more focused on people like mike i would hope... we'll see!