Its always seemed somewhat odd that we have 40+ member countries and CONMEBAL only has 10. At least the US could reasonably hope to regularly qualify for a merged Copa, but for several CONCACAF teams this would mean going from being an underdog participant in the Gold Cup to watching the Copa on TV every 4 years.
yes, this is a significant downside.
And that downside is doubled since the Gold Cup happens every 2 years while the Copa will happen every 4.
I don't think the US or Mexico will ever have to qualify. I assume the US is only going to agree to host this every 4 years if US and Mexico are certain to be in it.
Financially the tournament won't work with out Mexico, US, Brazil and Argentina, assuming they want to stay away from double headers again like they did this time.
While the competition will be higher for the one tournament, this merge also gives the US less competitive games during a cycle.
Edited just now by NewlyRetired