I agree with numbers 1 and 5, and 3 has potential.
But #2, remember that the Titans have a defense almost as bad as the Bills. And mainly Fitz was throwing screens etc. Almost hard to look bad under those circumstances, though he managed to do just that at the end. And #4, on paper i agree, but it has been 7 games now and no signs of life. Color me dubious.
i appreciate your looking for scenarios for playoffs. But I cannot even imagine a scenario where the Bills go to Texas and come out with a W. In fact this game has the potential for making the SF game a happy memory. The Pats* are at least a possibility. Though they beat the Bills soundly 6 weeks prior in Buffalo and are in a fight for the AFC East. A W is possible here but not a good bet by any means.
You might want to get a head start of your positives scenarios for 3-6 But honestly, unless Wanny has an epiphany and suddenly finds an answer for this defense, even if they somehow manage a split I don't see playoffs this season.