Invest in anything that will help the growth of the college club gym movement, since it looks like NCAA isn't coming back.
I believe this (increasing opportunity for adult gymnasts (over 18) to stay in the sport) is the
only change that will bring MAG back. US MAG is currently a sport with little to no opportunity to train or compete
at all, at any level of ability, after HS. This makes it different than virtually all other even slightly popular sports. Adults can do most other sports, with relatively little expense, for fun, health, and friendly competition. There is of course also far more opportunity to seriously train and compete past HS in most other sports.
Gymnastics is very expensive compared to other sports and there are
many other far less difficult sports boys and young men can excel in. Like it or not, parents with athletically talented kids are less likely to keep their kids in a sport where there are very few college teams at all, let alone scholarships, and basically no other opportunities except the current club system, which has a few problems.
Also, if international success is the goal, how does it make sense to keep focusing on younger and younger kids when generally speaking, international champions in MAG are consistently well into their 20s when they achieve their personal bests? And don't you think pushing these harder skills that are meant for mature bodies lower and lower in ages are likely to increase career-ending injuries before the peak performance age range?
Everyone wonders why WAG in US is so much better than MAG, internationally. To me it is obvious. Numbers and training opportunity. Period. So the key to more consistent international performance for US MAG is increasing overall numbers and training opportunity.
Provide more opportunity after HS and you will see more kids motivated to stay in the sport and the development of more and better MAG dedicated coaches. More kids want to be in the sport, more gyms will provide MAG training. This is how you bring a sport back. By fixing (or coming up with a solid alternative) to what went wrong in the first place. Not by monkeying around with ages and levels.
How to do this? I am not sure. I agree, MAG college teams will not come back under current law. An alternate solution would include the club system but would have to get beyond what club system currently can offer.