I understand why you said it is pointless, as you require regular play to reduce the inaccuracy.
However, there is no ways everyone can be in the US long enough for regular play or for it to balance out.
For me, I am curious on how to work out the bridge between level and various rating points.
Darryl and Sally are 2500 and they train in Taiwan.
Sally trains with the boys team, and she can't beat many of them there, so I would assume the boys are 2500+ too.
Darryl goes and trains with the same team, but not as often as Sally, and also can't beat many of them there. So this doubles my 2500+ guesstimate.
Then, 2023, another 4 boys with an olympian coach went to take part in the US Open.
the 2 stronger boys are all weaker than Sally/Darryl's training partners, but can beat 2400 players in the US Open.
so based on that limited data, I have set strong tier 2 juniors in Taiwan at 2400, strong tier 1 juniors at 2500+
In fact, our strongest U19, is currently WR03, so he is possible 2600+ range
The kid in Austria now, had a close loss to a 2600 US player in a youth competition this year. So again, probably cements my guesstimate.
Otherwise, how else are we suppose to bridge or do level estimates. We can only try and compare
For me, I have been more keen on these estimates, to that of TTR (Germany), as that would help me understand if we are putting players in the correct division or not. Last thing I want, the division is too low.
Luckily with the other thread, we have some USATT/TTR comparison, and I am able to kindof tell from players level and link them to USATT and then try and convert to TTR..... a huge mess, but so far, hopefully not too inaccurate,
I am hoping there is an easier way