Can't give an exact date yet, but it will take several months We wanted to start the dialogue early so we could hear feedback and work to improve the design where possible. The algorithm is still being created and tested. Play hours will most likely end up being the biggest consideration for creating the new worlds, along with commander time and squad size, time of day, and participation levels. We plan on updating the API so that it can recognize the new worlds created with World Restructuring. We want to release the system and make sure it meets all of our goals before adding/tweaking WvW rewards. It will become "active" when the next season starts. So if you change your WvW guild in the middle of season 1, you wont be sorted onto the same world as them until season 2. This is something that still needs to be discussed. So I don't have an answer for this yet. No. You can rep whatever guild you want. The WvW guild is just there for world sorting and forming alliances. We will look into this, but world restructuring will probably not consider the block list. It becomes too difficult to create massive worlds if it has to consider block lists when creating them.