IN THE YEAR 2525.......
Forgive me for reverting to "Old School", but instead of relying on new technology, maybe looking backwards might provide answers. In the days (forgive me) before face masks, players were taught to collide without using their heads as a battering ram. Combining the advances made in protective head gear, with renewed focus on teaching (and enforcing) avoiding contact with the head may make 2025 just another year to enjoy our game, pretty much as we know it.
Putting the "Blow your opponent up" genie back inside it's bottle is likely going to take a while, but like most worthwhile solutions, it will prove worth the effort. To a large degree, Rule Makers, Coaches and Officials are already on board pointing in the right direction. Now, if only ESPN, Sportscenter and all the local TV outlets would STOP highlighting the daily "10 Best/Biggest Hits" and glamorizing "mistakes", the process of reducing head injuries would move a lot faster.