Yeah, sometimes I think we tend to get excited about bad weather for no good reason.
The 2012 AFCCG comes to mind when all week long we heard how the heavy winds would definitely benefit the Pats. It didn't. It acted as a 12th defender for the Ravens, and we had the ball in FG position 7 times, only to come away with 13 total points. Of course, there was more to it than just that, but the weather certainly didn't "benefit" the Patriots by any stretch.
One could argue that freezing rain will help the team who can run the ball more effectively, which is something that I've been harping on for about 2 months now. The usual response? "We don't need to run the ball. Brady will just throw it for 50+ attempts." My concern is that it may not be possible due to any number of circumstances, and freezing rain could be one of them.
I'm just hoping to avoid scenarios like the Cincy loss, where it was a very close, low-scoring game due to the constant downpour, and the offense just wasn't able to get anything going.
Another obvious scenario that comes to mind is the Oct.'14 close victory over the NYJ where Brady complained about the footballs being too big and "heavy" (as we know, they were, having come in around 16 PSI), which was partially due to the rain.
I think we need a good game from the defense, an improvement in the running balance, and hopefully--a hot start.