Every national team faces those problems. One athlete is chosen, another aspirant is disappointed.
That's not what I am talking about at all.
Right now, the teams that are selected for synchro worlds (16) are coming from "clubs". In Canada only, there are 3 top notch club in both junior and senior and a bunch of less competitive clubs. Skaters train at their club, get selected by their home coach to make the team etc.
When a sport is then shifting gears to be included at the Olympics, National Federations have 2 options.
1). They can ask the clubs to earn their berth by competing at nationals, but in the Synchro 9 format. Then, the best club gets sent to the games.
This is how they do in Canada for curling for instance. The best curling provincial team gets sent to the O games.
In comes countries, they do not do this at all. They evaluate from the entire pool of curlers who are the best player at each position and then, they form a national team.
In artistic swimming, that's what happened in Canada a long time ago and created a lot of turmoil. We are talking about young athletes asked to move across the entire country to train in another province, at times, in a language they do not master. A lot of issues came out of that. It took a cycle or two before it got better. By then, Canada was no longer at all a powerhouse in artistic swimming.
So that model would be :
2). Select the best synchro skaters from all the clubs... uproot and relocate them into ONE national team.
If option 2 is selected, there will be many issues for quite a while because the traditional way of doing things right now is not aligned with option 2.
I hope this clears it up for you.