I like the move some of the new stadiums are taking in terms of concession prices. Mercedes Benz Stadium (Falcons) is a new stadium that has really helped push this.
I'm sure there's a bit of a hit to the revenue given that a lot of people will still buy the concessions because you don't have much of a choice, but I like the move to allow people (especially families) to enjoy more games and they make up the revenue from the stadiums being fuller on a regular basis (both in ticket prices and volume of concessions). It's damn near impossible to go to a game with 2-3 kids and not get them anything at all.
I'd like to see this become a bigger trend. It might not work for certain teams/cities that have great attendance and/or many people with deep pockets, but this should become more commonplace for mid-market teams and secondary cities.