Upside, Big lead time so people can talk it out and decide what arbitrary number world there migrating to so they can continue playing together. I am kind of happy that there keeping server names out of the equation until the dust settles. I doubt that there will be any heated debate on what number is better. Granted there is a strong argument for 3....

Downside, Inactives have a high chance of coming back and being on a server where they know nobody. I would guess that there planting inactives due to some behind the scenes system stuff.

I think it would be absolutely nifty if they allowed those auto assigned a free world transfer ticket(s) redeemable with in a month or so of there return. Not to mention there will be multiple cases where some players will simply not be able to put in there transfer apps.