AQ War Effort. Botting and Multiboxing (That is already a huge post, and I believe this one deserves attention, not here). The third point deserves some excuse, and that I hope that the Devs are taking proper steps to wow classic gold eliminate this possible issue. There will be hosts that have the materials ready to turn daily 1 when the war effort starts. This is nothing but. And using spreadsheets and types it makes it super easy to track all the materials.
For instance, Firemaw (EU) has projected turn ins every day and goals they will need to hit until July 15th. It is looking very promising for them in order to perform it on day 1. Why are they doing this you ask? Because they're gamers playing a game that was our for years now. Since they can. They and a few different servers are going to have the war effort done along with the Gates of Ahn'Qiraj opened one week when it comes out.
The main reason for concern is that you're looking at an expected boom-bust situation again if we use history as any guideline. The gates open on Server A inside the first week - Several alliance/horde guilds move there - High Queue times ensue - free transfers open up along with the lesser faction leaves overnight. The suitable answer to this is really a war attempt that is time-gated. It seems so obvious but I've a feeling it will be shouted down with small but vocal minority of #nochanges WOW players. I'm all ears Whether there are other solutions.
Quite frankly, when discharging transfers that are free much care has to be taken. It's torpedoed two servers I have played on now, and I am tired of losing weight since I need to play 4D chess with host choice on a normal basis. I've lost hundreds of friends that are fed up with having to pay more income for issues created by Blizzard. What I find as a solution is faction based server locks. You cannot transfer to a server with a personality that is part of the faction with more 60 percent of their total participant population. Full servers are secured indefinitely. And needless to say, there's friends. Should they wish to transfer to a locked server then make a simple requirement of being Real ID buddies for longer than a month.
Another solution could be limiting the amount of logged into accounts from one location. This goes longer after problem 4. That is why it can't be considered. Bring layering. Layering somewhat generated the issue we still have today with many full servers. It created a false sense of what the population of the host really was. When cheap classic wow gold came to crunch time with phase 2 it then became evident that layering kept too many people on the host. Everything seemed fine because there was not a queue so people kept making characters.