But eventually, if you want a FIFA with all the countries of the world involved, they will vote for the leaders and vote for the world cup venues that are causing all the angst now. Why does that change unless the individual FAs change?
No, it would be the same house. It's made up of representatives of all the countries' FA's. They already have the power to do everything you want them to do. But they don't.
So all the countries of the world leave FIFA and set up a new organisation based on exactly the same structure? It makes little sense.
The house needs cleaning from the inside.
I'm not entirely sure what you mean by 'Leave FIFA' ?
What would you replace it with, perhaps an organisation where each individual country FA is a member and they collectively elect a governing body to manage world football, with the entire group of FA's coming together to vote on the most...