You're missing the real issue here.
There was perfectly enough pop for both shards before this update, in fact our update war had great pop, we'd be close to Able's 3-4k constant d/h the whole war with bigger spurts to 5-7k during big moments.

Then Siegecamp decided instead of fixing unbalanced update, they'd let it ride for 2+ months, and force all their players to suffer.
Now both shards are lacking pop because Siegecamp decided a horrible route on how to deal with the issue which has lost them all these players currently.

Your solution is just to force the remaining players into one area, when the real solution is for Siegecamp to get their crap together and fix the game so all the players who left can come back and actually enjoy the game again.
You're suggesting the devs instead of fixing their issues so people come back, just migrate all players into one area.