Population and Server Transfer Number
Arenanet has the statistics, these numbers are compiled on a daily basis and used by arenanet for various purposes on top on basic data auditing
No they will not release statistics although you can bet they is talk at arenanet about the rampant guild buying and server stacking that seems to have been getting worse over the past few weeks
Transfer numbers and WvW activity are not also aligned meaning just cuz a server has a high amount of transfers this one time doesnt mean all those players play wvw constantly or even at all making any release of the statistics very vulnerable to miss interpretation.
A hardcore 25 man WvW guild that plays almost everyday has a better chance to succeed that 100 randoms pugging it in WvW further skewing the interpretation of those statistics, the opposite can also happend if those 100 people decided to zerg everyday, or in timezones where there is little opposition, so many variables that people very rarely consider and even take for granted.
And no Anet will likely not do anything to directly mitigate that as the guild transferring thing, whether purchased or not is part of what you might consider as “free will” for the player, it sounds and feels wrong that guilds purposely stack or even get bought for thousands of gold, and it is sad but you have to remember that although people may not like what you say,think or do, anet will fight for you right to do them so long as they are within certain boundaries of course.
(edited by SpehssMehreen.5897)