A consistent bit throughout the series is that Walt always takes something from the people he kills. In the case of Gus, when he went to throw up in the toilet he set the towel underneath him, and with Mike he takes his drinks on the rocks (not too sure about that one). In the beginning of the season when Walt is in the diner for his 52nd birthday, he gives the waitress (cashier? It's been a while) a $100 tip - a bit of a charitable donation(word choice?), kind of like what Jesse was doing throwing away the stacks of cash - and the jacket he is wearing is very similar to the one Jesse has worn before (credit on that to the Breaking Bad subreddit for that one).
Colors also apparently have somewhat of a role (Need to look into that one a bit more). Marie wears purple a lot, which signifies "good judgement" and "peace of mind" as well as "seeking spiritual fulfillment" which seem right up her ally (at least in her mind). Just an example.
I'm thinking Walt will kill Jesse and his kids, hopefully Skylar as well. Hank will kill Walt, find the ricin cigarette and smoke it, killing himself. Then there's Marie, who will run off into the sunset with Ted in his wheelchair.
Though I also wish Jr. had a secret plot the entire time and ends up Keyser Soze-ing everyone.