Originally Posted by Vaneras
This is not something that we are encouraging, but it is also something that we currently have no realistic way to prevent. That being said, this is something that may change soon, which is why we always advise people to not use any type of add-on designed to circumvent or bend our balancing safeguards... using such add-ons can lead to severe account penalties!
(Source)
This clearly leads to the following question.
Does the use of the Preform AV Enabler addon by many players constitute
circumvention of the balancing safeguards in place?
The Battleground queueing system currently supports easy entry into Battlegrounds for groups of players of size five or less. This could possibly be a technological limitation, and as such an unintended limit.
The "balancing safeguards" of Blizzard's queueing system for Battlegrounds is unknown, but, they have said in the past about the LFD system that they try to mix high- and low-geared players together for dungeons. This means that if a similar balancing safeguard is used for the PvP queueing system, premades made up of mostly high-geared players (most premades have a reasonbly high resilience prerequisite to join) could be breaking the rules by attempting to fill a battleground with such a group.