IMO, yes, it was awful yesterday heat-wise, but it's always hot there, this was just worse than normal. I don't think any huge changed need to be made, aside from maybe the NFL scheduling Miami games for 4:25 kickoff early in the season. If they continue to get hype, easy solution is for them to play SNF/MNF early in the year like we did this year.
It's the same here but with the cold. It's much more likely to be 42 degrees, gray and damp in December or early January in WNY than 25 degrees and a blizzard or crazy bitter cold like the NE playoff game. But the latter are certainly possible.
All that said, give me the cold anytime over the heat. You can do all sorts of things to warm up, but the heat is just brutal.