Actually the people who don't know anyone, will be more inclined to play on a low population server.

If they offer free transfers to people to the unpopulated servers it will lower the stress.

Its actually a good idea and had they put some forethought into things, they would have had closer to 40 servers per group instead of 25.

They also would have broken the game up into clusters or groups of say 7-10 servers instead of all 25 trying to blitz through the same Duty Finder.

Finally, if they could eliminate the client tryign to access the JP and NA/EU servers at the same time (ie have two lobby servers selected by region on the login screen) their stress would have been better managed.