I agree that the suggestion has been made numerous times before. And I'm not the one who mentioned it here again.
But I can see why the Boston Globe or Barstool Sports or MIT or whomever didn't do it last year - the NFL, after all, promised a comprehensive accounting of football air pressure.
Once the NFL chose to not release it at the end of the season, and, moreover, when they totally lied and said that all they were planning on doing in the first place was "spot checks" instead of what they promised to do, and when they wouldn't release any information..... Well then, NOW I can see some news/sports reporting organization (or university science department) saying, screw that, we are doing this on our own.
Why do it?
1. As a public service to NFL fans who actually care.
2. As a watchdog on the NFL.
3. To expose the outright corruption in the NFL - and yes that's a huge news story even though many of us have observed it for a while now.
4. If you're a Pats' fan, then you get to see your team exonerated. And if by some miracle the numbers did NOT support the Patriots, well then, at least we'd know that the penalty may have been justified, and this whole "woe is us" crap can stop. (Of course, I cannot fathom the latter actually being the case, scientifically, but who knows, right? That's why you actually do the testing.)
5. It would simply be educational.
So yeah nobody has done this yet, in this manner. I think it would be easy to do, and I think it would be important to do, and I think there's gotta be SOMEBODY out there that has scientific credibility (especially if it's like MIT or another college science professor) that would want to take this project on. It it was done in conjunction with other universities around the country, doing this same thing in a dozen other cities, especially cold weather cities, don't you think this would be just awesome?
You have a weekly segment. Post it online. Have it reported in the papers. Before the actual testing, you announce what the IGL predicts given the temperature that day. Carefully track the temperature and even moisture. Then measure at halftime in those conditions. Show it all. See how it lines up with the IGL. At some point there will be a game that comes pretty close to the 2015 AFCCG. When it does, especially if it's a game, say, between Chicago and Green Bay, and the numbers line up with what it looked like in Foxboro that day, then yeah, that would be eye opening for many people.