Man it would be one big Hong Kong to fit all the worlds Jews into the state of Israel
Impractical
Ultra zionists are expansionist and dream of a greater Israel that stretches from the Nile to the Euphrates. They would love to see the 15-17 million Jews from around the world return home to facilitate it.
Obviously, they are completely deluded if they think it could ever happen, but then fanatics aren’t neccessarily dissuaded by long odds.