I worry just a bit about the "12 additional cameras", and if it's impact is to make review time even longer.
This seems to be a common fear of fans "Don't make the games longer". I guess I am fine if a game lasts an extra 15 minutes, if it means getting calls correct. That way I don't have to spend hours after the game, debating a bad call and its impact on the game.
Seriously though. There are so many ways that the NFL and broadcasters can keep the games to 3 hrs. or less, have better reviews AND still sneak in all the commercials to pay for the process. Networks have gotten lazy and rigid on the structure of when the ads are run. Think outside the box. They just need to run ads during some of the reviews, if there is a review that takes 2 minutes, then cut 1 upcoming "media timeout" after a punt or kickoff. Maybe cut the studio half time show down a bit and run ads instead.
Hockey is a sport without a lot of long stoppages in play. Yet, Hockey can still be enjoyed on Television and companies still pay to advertise. If you haven't watched a hockey game lately, check out the creative ways they bring in advertising revenue. Using the boards and ice to digitally produce their own ads on both surfaces. Baseball is doing the same things. I wonder when the NFL will follow and the field, for fans watching on TV, will be covered in ads.
A Hockey season is 82 games long, a brutal schedule and I think probably the most grueling, of the top 4 sports, on a players body. Yet, the top paid NHL players are "only" making $12-13M/year. NFL players have become overpaid and pampered.